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; 237 238 IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2); 239 240 lockdep_assert_held(&mvm->mutex); 241 242 resp = iwl_mvm_update_mcc(mvm, alpha2, src_id); 243 if (IS_ERR_OR_NULL(resp)) { 244 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n", 245 PTR_ERR_OR_ZERO(resp)); 246 goto out; 247 } 248 249 if (changed) { 250 u32 status = le32_to_cpu(resp->status); 251 252 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE || 253 status == MCC_RESP_ILLEGAL); 254 } 255 256 regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg, 257 __le32_to_cpu(resp->n_channels), 258 resp->channels, 259 __le16_to_cpu(resp->mcc), 260 __le16_to_cpu(resp->geo_info), 261 __le16_to_cpu(resp->cap)); 262 /* Store the return source id */ 263 src_id = resp->source_id; 264 kfree(resp); 265 if (IS_ERR_OR_NULL(regd)) { 266 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n", 267 PTR_ERR_OR_ZERO(regd)); 268 goto out; 269 } 270 271 IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n", 272 regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id); 273 mvm->lar_regdom_set = true; 274 mvm->mcc_src = src_id; 275 276 out: 277 return regd; 278 } 279 280 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm) 281 { 282 bool changed; 283 struct ieee80211_regdomain *regd; 284 285 if (!iwl_mvm_is_lar_supported(mvm)) 286 return; 287 288 regd = iwl_mvm_get_current_regdomain(mvm, &changed); 289 if (!IS_ERR_OR_NULL(regd)) { 290 /* only update the regulatory core if changed */ 291 if (changed) 292 regulatory_set_wiphy_regd(mvm->hw->wiphy, regd); 293 294 kfree(regd); 295 } 296 } 297 298 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm, 299 bool *changed) 300 { 301 return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ", 302 iwl_mvm_is_wifi_mcc_supported(mvm) ? 303 MCC_SOURCE_GET_CURRENT : 304 MCC_SOURCE_OLD_FW, changed); 305 } 306 307 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm) 308 { 309 enum iwl_mcc_source used_src; 310 struct ieee80211_regdomain *regd; 311 int ret; 312 bool changed; 313 const struct ieee80211_regdomain *r = 314 rtnl_dereference(mvm->hw->wiphy->regd); 315 316 if (!r) 317 return -ENOENT; 318 319 /* save the last source in case we overwrite it below */ 320 used_src = mvm->mcc_src; 321 if (iwl_mvm_is_wifi_mcc_supported(mvm)) { 322 /* Notify the firmware we support wifi location updates */ 323 regd = iwl_mvm_get_current_regdomain(mvm, NULL); 324 if (!IS_ERR_OR_NULL(regd)) 325 kfree(regd); 326 } 327 328 /* Now set our last stored MCC and source */ 329 regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src, 330 &changed); 331 if (IS_ERR_OR_NULL(regd)) 332 return -EIO; 333 334 /* update cfg80211 if the regdomain was changed */ 335 if (changed) 336 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd); 337 else 338 ret = 0; 339 340 kfree(regd); 341 return ret; 342 } 343 344 static const u8 he_if_types_ext_capa_sta[] = { 345 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING, 346 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT, 347 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF, 348 [9] = WLAN_EXT_CAPA10_TWT_REQUESTER_SUPPORT, 349 }; 350 351 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = { 352 { 353 .iftype = NL80211_IFTYPE_STATION, 354 .extended_capabilities = he_if_types_ext_capa_sta, 355 .extended_capabilities_mask = he_if_types_ext_capa_sta, 356 .extended_capabilities_len = sizeof(he_if_types_ext_capa_sta), 357 }, 358 }; 359 360 static int 361 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 362 { 363 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 364 *tx_ant = iwl_mvm_get_valid_tx_ant(mvm); 365 *rx_ant = iwl_mvm_get_valid_rx_ant(mvm); 366 return 0; 367 } 368 369 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm) 370 { 371 struct ieee80211_hw *hw = mvm->hw; 372 int num_mac, ret, i; 373 static const u32 mvm_ciphers[] = { 374 WLAN_CIPHER_SUITE_WEP40, 375 WLAN_CIPHER_SUITE_WEP104, 376 WLAN_CIPHER_SUITE_TKIP, 377 WLAN_CIPHER_SUITE_CCMP, 378 }; 379 #ifdef CONFIG_PM_SLEEP 380 bool unified = fw_has_capa(&mvm->fw->ucode_capa, 381 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); 382 #endif 383 384 /* Tell mac80211 our characteristics */ 385 ieee80211_hw_set(hw, SIGNAL_DBM); 386 ieee80211_hw_set(hw, SPECTRUM_MGMT); 387 ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS); 388 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 389 ieee80211_hw_set(hw, SUPPORTS_PS); 390 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 391 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 392 ieee80211_hw_set(hw, TIMING_BEACON_ONLY); 393 ieee80211_hw_set(hw, CONNECTION_MONITOR); 394 ieee80211_hw_set(hw, CHANCTX_STA_CSA); 395 ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); 396 ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS); 397 ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU); 398 ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR); 399 ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP); 400 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 401 ieee80211_hw_set(hw, BUFF_MMPDU_TXQ); 402 ieee80211_hw_set(hw, STA_MMPDU_TXQ); 403 /* 404 * On older devices, enabling TX A-MSDU occasionally leads to 405 * something getting messed up, the command read from the FIFO 406 * gets out of sync and isn't a TX command, so that we have an 407 * assert EDC. 408 * 409 * It's not clear where the bug is, but since we didn't used to 410 * support A-MSDU until moving the mac80211 iTXQs, just leave it 411 * for older devices. We also don't see this issue on any newer 412 * devices. 413 */ 414 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000) 415 ieee80211_hw_set(hw, TX_AMSDU); 416 ieee80211_hw_set(hw, TX_FRAG_LIST); 417 418 if (iwl_mvm_has_tlc_offload(mvm)) { 419 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW); 420 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 421 } 422 423 if (iwl_mvm_has_new_rx_api(mvm)) 424 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 425 426 if (fw_has_capa(&mvm->fw->ucode_capa, 427 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) { 428 ieee80211_hw_set(hw, AP_LINK_PS); 429 } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) { 430 /* 431 * we absolutely need this for the new TX API since that comes 432 * with many more queues than the current code can deal with 433 * for station powersave 434 */ 435 return -EINVAL; 436 } 437 438 if (mvm->trans->num_rx_queues > 1) 439 ieee80211_hw_set(hw, USES_RSS); 440 441 if (mvm->trans->max_skb_frags) 442 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG; 443 444 hw->queues = IEEE80211_MAX_QUEUES; 445 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE; 446 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC | 447 IEEE80211_RADIOTAP_MCS_HAVE_STBC; 448 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC | 449 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED; 450 451 hw->radiotap_timestamp.units_pos = 452 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US | 453 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ; 454 /* this is the case for CCK frames, it's better (only 8) for OFDM */ 455 hw->radiotap_timestamp.accuracy = 22; 456 457 if (!iwl_mvm_has_tlc_offload(mvm)) 458 hw->rate_control_algorithm = RS_NAME; 459 460 hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES; 461 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP; 462 hw->max_tx_fragments = mvm->trans->max_skb_frags; 463 464 BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6); 465 memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers)); 466 hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers); 467 hw->wiphy->cipher_suites = mvm->ciphers; 468 469 if (iwl_mvm_has_new_rx_api(mvm)) { 470 mvm->ciphers[hw->wiphy->n_cipher_suites] = 471 WLAN_CIPHER_SUITE_GCMP; 472 hw->wiphy->n_cipher_suites++; 473 mvm->ciphers[hw->wiphy->n_cipher_suites] = 474 WLAN_CIPHER_SUITE_GCMP_256; 475 hw->wiphy->n_cipher_suites++; 476 } 477 478 if (iwlwifi_mod_params.swcrypto) 479 IWL_ERR(mvm, 480 "iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n"); 481 if (!iwlwifi_mod_params.bt_coex_active) 482 IWL_ERR(mvm, 483 "iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n"); 484 485 ieee80211_hw_set(hw, MFP_CAPABLE); 486 mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC; 487 hw->wiphy->n_cipher_suites++; 488 if (iwl_mvm_has_new_rx_api(mvm)) { 489 mvm->ciphers[hw->wiphy->n_cipher_suites] = 490 WLAN_CIPHER_SUITE_BIP_GMAC_128; 491 hw->wiphy->n_cipher_suites++; 492 mvm->ciphers[hw->wiphy->n_cipher_suites] = 493 WLAN_CIPHER_SUITE_BIP_GMAC_256; 494 hw->wiphy->n_cipher_suites++; 495 } 496 497 /* currently FW API supports only one optional cipher scheme */ 498 if (mvm->fw->cs[0].cipher) { 499 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0]; 500 struct ieee80211_cipher_scheme *cs = &mvm->cs[0]; 501 502 mvm->hw->n_cipher_schemes = 1; 503 504 cs->cipher = le32_to_cpu(fwcs->cipher); 505 cs->iftype = BIT(NL80211_IFTYPE_STATION); 506 cs->hdr_len = fwcs->hdr_len; 507 cs->pn_len = fwcs->pn_len; 508 cs->pn_off = fwcs->pn_off; 509 cs->key_idx_off = fwcs->key_idx_off; 510 cs->key_idx_mask = fwcs->key_idx_mask; 511 cs->key_idx_shift = fwcs->key_idx_shift; 512 cs->mic_len = fwcs->mic_len; 513 514 mvm->hw->cipher_schemes = mvm->cs; 515 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher; 516 hw->wiphy->n_cipher_suites++; 517 } 518 519 if (fw_has_capa(&mvm->fw->ucode_capa, 520 IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) { 521 wiphy_ext_feature_set(hw->wiphy, 522 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER); 523 hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa; 524 } 525 526 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 527 hw->wiphy->features |= 528 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 529 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR | 530 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 531 532 hw->sta_data_size = sizeof(struct iwl_mvm_sta); 533 hw->vif_data_size = sizeof(struct iwl_mvm_vif); 534 hw->chanctx_data_size = sizeof(u16); 535 hw->txq_data_size = sizeof(struct iwl_mvm_txq); 536 537 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 538 BIT(NL80211_IFTYPE_P2P_CLIENT) | 539 BIT(NL80211_IFTYPE_AP) | 540 BIT(NL80211_IFTYPE_P2P_GO) | 541 BIT(NL80211_IFTYPE_P2P_DEVICE) | 542 BIT(NL80211_IFTYPE_ADHOC); 543 544 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; 545 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 546 547 /* The new Tx API does not allow to pass the key or keyid of a MPDU to 548 * the hw, preventing us to control which key(id) to use per MPDU. 549 * Till that's fixed we can't use Extended Key ID for the newer cards. 550 */ 551 if (!iwl_mvm_has_new_tx_api(mvm)) 552 wiphy_ext_feature_set(hw->wiphy, 553 NL80211_EXT_FEATURE_EXT_KEY_ID); 554 hw->wiphy->features |= NL80211_FEATURE_HT_IBSS; 555 556 hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR; 557 if (iwl_mvm_is_lar_supported(mvm)) 558 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED; 559 else 560 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG | 561 REGULATORY_DISABLE_BEACON_HINTS; 562 563 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; 564 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 565 566 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations; 567 hw->wiphy->n_iface_combinations = 568 ARRAY_SIZE(iwl_mvm_iface_combinations); 569 570 hw->wiphy->max_remain_on_channel_duration = 10000; 571 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL; 572 573 /* Extract MAC address */ 574 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN); 575 hw->wiphy->addresses = mvm->addresses; 576 hw->wiphy->n_addresses = 1; 577 578 /* Extract additional MAC addresses if available */ 579 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ? 580 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1; 581 582 for (i = 1; i < num_mac; i++) { 583 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr, 584 ETH_ALEN); 585 mvm->addresses[i].addr[5]++; 586 hw->wiphy->n_addresses++; 587 } 588 589 iwl_mvm_reset_phy_ctxts(mvm); 590 591 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm); 592 593 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX; 594 595 BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK); 596 BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) || 597 IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK)); 598 599 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 600 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS; 601 else 602 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS; 603 604 if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels) 605 hw->wiphy->bands[NL80211_BAND_2GHZ] = 606 &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; 607 if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) { 608 hw->wiphy->bands[NL80211_BAND_5GHZ] = 609 &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; 610 611 if (fw_has_capa(&mvm->fw->ucode_capa, 612 IWL_UCODE_TLV_CAPA_BEAMFORMER) && 613 fw_has_api(&mvm->fw->ucode_capa, 614 IWL_UCODE_TLV_API_LQ_SS_PARAMS)) 615 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |= 616 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE; 617 } 618 619 hw->wiphy->hw_version = mvm->trans->hw_id; 620 621 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM) 622 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; 623 else 624 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; 625 626 hw->wiphy->max_sched_scan_reqs = 1; 627 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX; 628 hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw); 629 /* we create the 802.11 header and zero length SSID IE. */ 630 hw->wiphy->max_sched_scan_ie_len = 631 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2; 632 hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS; 633 hw->wiphy->max_sched_scan_plan_interval = U16_MAX; 634 635 /* 636 * the firmware uses u8 for num of iterations, but 0xff is saved for 637 * infinite loop, so the maximum number of iterations is actually 254. 638 */ 639 hw->wiphy->max_sched_scan_plan_iterations = 254; 640 641 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN | 642 NL80211_FEATURE_LOW_PRIORITY_SCAN | 643 NL80211_FEATURE_P2P_GO_OPPPS | 644 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE | 645 NL80211_FEATURE_DYNAMIC_SMPS | 646 NL80211_FEATURE_STATIC_SMPS | 647 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION; 648 649 if (fw_has_capa(&mvm->fw->ucode_capa, 650 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT)) 651 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION; 652 if (fw_has_capa(&mvm->fw->ucode_capa, 653 IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT)) 654 hw->wiphy->features |= NL80211_FEATURE_QUIET; 655 656 if (fw_has_capa(&mvm->fw->ucode_capa, 657 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT)) 658 hw->wiphy->features |= 659 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES; 660 661 if (fw_has_capa(&mvm->fw->ucode_capa, 662 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) 663 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES; 664 665 if (fw_has_api(&mvm->fw->ucode_capa, 666 IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) { 667 wiphy_ext_feature_set(hw->wiphy, 668 NL80211_EXT_FEATURE_SCAN_START_TIME); 669 wiphy_ext_feature_set(hw->wiphy, 670 NL80211_EXT_FEATURE_BSS_PARENT_TSF); 671 wiphy_ext_feature_set(hw->wiphy, 672 NL80211_EXT_FEATURE_SET_SCAN_DWELL); 673 } 674 675 if (iwl_mvm_is_oce_supported(mvm)) { 676 wiphy_ext_feature_set(hw->wiphy, 677 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP); 678 wiphy_ext_feature_set(hw->wiphy, 679 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME); 680 wiphy_ext_feature_set(hw->wiphy, 681 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION); 682 wiphy_ext_feature_set(hw->wiphy, 683 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE); 684 } 685 686 if (mvm->nvm_data->sku_cap_11ax_enable && 687 !iwlwifi_mod_params.disable_11ax) { 688 hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa; 689 hw->wiphy->num_iftype_ext_capab = 690 ARRAY_SIZE(he_iftypes_ext_capa); 691 692 ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID); 693 ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID); 694 } 695 696 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; 697 698 #ifdef CONFIG_PM_SLEEP 699 if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) && 700 mvm->trans->ops->d3_suspend && 701 mvm->trans->ops->d3_resume && 702 device_can_wakeup(mvm->trans->dev)) { 703 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT | 704 WIPHY_WOWLAN_DISCONNECT | 705 WIPHY_WOWLAN_EAP_IDENTITY_REQ | 706 WIPHY_WOWLAN_RFKILL_RELEASE | 707 WIPHY_WOWLAN_NET_DETECT; 708 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY | 709 WIPHY_WOWLAN_GTK_REKEY_FAILURE | 710 WIPHY_WOWLAN_4WAY_HANDSHAKE; 711 712 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS; 713 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN; 714 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN; 715 mvm->wowlan.max_nd_match_sets = 716 iwl_umac_scan_get_max_profiles(mvm->fw); 717 hw->wiphy->wowlan = &mvm->wowlan; 718 } 719 #endif 720 721 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 722 /* assign default bcast filtering configuration */ 723 mvm->bcast_filters = iwl_mvm_default_bcast_filters; 724 #endif 725 726 ret = iwl_mvm_leds_init(mvm); 727 if (ret) 728 return ret; 729 730 if (fw_has_capa(&mvm->fw->ucode_capa, 731 IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) { 732 IWL_DEBUG_TDLS(mvm, "TDLS supported\n"); 733 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS; 734 ieee80211_hw_set(hw, TDLS_WIDER_BW); 735 } 736 737 if (fw_has_capa(&mvm->fw->ucode_capa, 738 IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) { 739 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n"); 740 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH; 741 } 742 743 hw->netdev_features |= mvm->cfg->features; 744 if (!iwl_mvm_is_csum_supported(mvm)) { 745 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS | 746 NETIF_F_RXCSUM); 747 /* We may support SW TX CSUM */ 748 if (IWL_MVM_SW_TX_CSUM_OFFLOAD) 749 hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS; 750 } 751 752 if (mvm->cfg->vht_mu_mimo_supported) 753 wiphy_ext_feature_set(hw->wiphy, 754 NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER); 755 756 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT)) 757 wiphy_ext_feature_set(hw->wiphy, 758 NL80211_EXT_FEATURE_PROTECTED_TWT); 759 760 hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm); 761 hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm); 762 763 ret = ieee80211_register_hw(mvm->hw); 764 if (ret) { 765 iwl_mvm_leds_exit(mvm); 766 } 767 768 return ret; 769 } 770 771 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, 772 struct ieee80211_sta *sta) 773 { 774 if (likely(sta)) { 775 if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0)) 776 return; 777 } else { 778 if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0)) 779 return; 780 } 781 782 ieee80211_free_txskb(mvm->hw, skb); 783 } 784 785 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw, 786 struct ieee80211_tx_control *control, 787 struct sk_buff *skb) 788 { 789 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 790 struct ieee80211_sta *sta = control->sta; 791 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); 792 struct ieee80211_hdr *hdr = (void *)skb->data; 793 bool offchannel = IEEE80211_SKB_CB(skb)->flags & 794 IEEE80211_TX_CTL_TX_OFFCHAN; 795 796 if (iwl_mvm_is_radio_killed(mvm)) { 797 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n"); 798 goto drop; 799 } 800 801 if (offchannel && 802 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) && 803 !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status)) 804 goto drop; 805 806 /* treat non-bufferable MMPDUs on AP interfaces as broadcast */ 807 if ((info->control.vif->type == NL80211_IFTYPE_AP || 808 info->control.vif->type == NL80211_IFTYPE_ADHOC) && 809 ieee80211_is_mgmt(hdr->frame_control) && 810 !ieee80211_is_bufferable_mmpdu(hdr->frame_control)) 811 sta = NULL; 812 813 /* If there is no sta, and it's not offchannel - send through AP */ 814 if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION && 815 !offchannel) { 816 struct iwl_mvm_vif *mvmvif = 817 iwl_mvm_vif_from_mac80211(info->control.vif); 818 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); 819 820 if (ap_sta_id < IWL_MVM_STATION_COUNT) { 821 /* mac80211 holds rcu read lock */ 822 sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]); 823 if (IS_ERR_OR_NULL(sta)) 824 goto drop; 825 } 826 } 827 828 iwl_mvm_tx_skb(mvm, skb, sta); 829 return; 830 drop: 831 ieee80211_free_txskb(hw, skb); 832 } 833 834 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq) 835 { 836 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 837 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 838 struct sk_buff *skb = NULL; 839 840 /* 841 * No need for threads to be pending here, they can leave the first 842 * taker all the work. 843 * 844 * mvmtxq->tx_request logic: 845 * 846 * If 0, no one is currently TXing, set to 1 to indicate current thread 847 * will now start TX and other threads should quit. 848 * 849 * If 1, another thread is currently TXing, set to 2 to indicate to 850 * that thread that there was another request. Since that request may 851 * have raced with the check whether the queue is empty, the TXing 852 * thread should check the queue's status one more time before leaving. 853 * This check is done in order to not leave any TX hanging in the queue 854 * until the next TX invocation (which may not even happen). 855 * 856 * If 2, another thread is currently TXing, and it will already double 857 * check the queue, so do nothing. 858 */ 859 if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2)) 860 return; 861 862 rcu_read_lock(); 863 do { 864 while (likely(!mvmtxq->stopped && 865 (mvm->trans->system_pm_mode == 866 IWL_PLAT_PM_MODE_DISABLED))) { 867 skb = ieee80211_tx_dequeue(hw, txq); 868 869 if (!skb) { 870 if (txq->sta) 871 IWL_DEBUG_TX(mvm, 872 "TXQ of sta %pM tid %d is now empty\n", 873 txq->sta->addr, 874 txq->tid); 875 break; 876 } 877 878 iwl_mvm_tx_skb(mvm, skb, txq->sta); 879 } 880 } while (atomic_dec_return(&mvmtxq->tx_request)); 881 rcu_read_unlock(); 882 } 883 884 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw, 885 struct ieee80211_txq *txq) 886 { 887 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 888 struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq); 889 890 /* 891 * Please note that racing is handled very carefully here: 892 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is 893 * deleted afterwards. 894 * This means that if: 895 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list): 896 * queue is allocated and we can TX. 897 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list): 898 * a race, should defer the frame. 899 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list): 900 * need to allocate the queue and defer the frame. 901 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list): 902 * queue is already scheduled for allocation, no need to allocate, 903 * should defer the frame. 904 */ 905 906 /* If the queue is allocated TX and return. */ 907 if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) { 908 /* 909 * Check that list is empty to avoid a race where txq_id is 910 * already updated, but the queue allocation work wasn't 911 * finished 912 */ 913 if (unlikely(txq->sta && !list_empty(&mvmtxq->list))) 914 return; 915 916 iwl_mvm_mac_itxq_xmit(hw, txq); 917 return; 918 } 919 920 /* The list is being deleted only after the queue is fully allocated. */ 921 if (!list_empty(&mvmtxq->list)) 922 return; 923 924 list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs); 925 schedule_work(&mvm->add_stream_wk); 926 } 927 928 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...) \ 929 do { \ 930 if (!(le16_to_cpu(_tid_bm) & BIT(_tid))) \ 931 break; \ 932 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt); \ 933 } while (0) 934 935 static void 936 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 937 struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn, 938 enum ieee80211_ampdu_mlme_action action) 939 { 940 struct iwl_fw_dbg_trigger_tlv *trig; 941 struct iwl_fw_dbg_trigger_ba *ba_trig; 942 943 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 944 FW_DBG_TRIGGER_BA); 945 if (!trig) 946 return; 947 948 ba_trig = (void *)trig->data; 949 950 switch (action) { 951 case IEEE80211_AMPDU_TX_OPERATIONAL: { 952 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 953 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 954 955 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid, 956 "TX AGG START: MAC %pM tid %d ssn %d\n", 957 sta->addr, tid, tid_data->ssn); 958 break; 959 } 960 case IEEE80211_AMPDU_TX_STOP_CONT: 961 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid, 962 "TX AGG STOP: MAC %pM tid %d\n", 963 sta->addr, tid); 964 break; 965 case IEEE80211_AMPDU_RX_START: 966 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid, 967 "RX AGG START: MAC %pM tid %d ssn %d\n", 968 sta->addr, tid, rx_ba_ssn); 969 break; 970 case IEEE80211_AMPDU_RX_STOP: 971 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid, 972 "RX AGG STOP: MAC %pM tid %d\n", 973 sta->addr, tid); 974 break; 975 default: 976 break; 977 } 978 } 979 980 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw, 981 struct ieee80211_vif *vif, 982 struct ieee80211_ampdu_params *params) 983 { 984 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 985 int ret; 986 struct ieee80211_sta *sta = params->sta; 987 enum ieee80211_ampdu_mlme_action action = params->action; 988 u16 tid = params->tid; 989 u16 *ssn = ¶ms->ssn; 990 u16 buf_size = params->buf_size; 991 bool amsdu = params->amsdu; 992 u16 timeout = params->timeout; 993 994 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n", 995 sta->addr, tid, action); 996 997 if (!(mvm->nvm_data->sku_cap_11n_enable)) 998 return -EACCES; 999 1000 mutex_lock(&mvm->mutex); 1001 1002 switch (action) { 1003 case IEEE80211_AMPDU_RX_START: 1004 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id == 1005 iwl_mvm_sta_from_mac80211(sta)->sta_id) { 1006 struct iwl_mvm_vif *mvmvif; 1007 u16 macid = iwl_mvm_vif_from_mac80211(vif)->id; 1008 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid]; 1009 1010 mdata->opened_rx_ba_sessions = true; 1011 mvmvif = iwl_mvm_vif_from_mac80211(vif); 1012 cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk); 1013 } 1014 if (!iwl_enable_rx_ampdu()) { 1015 ret = -EINVAL; 1016 break; 1017 } 1018 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size, 1019 timeout); 1020 break; 1021 case IEEE80211_AMPDU_RX_STOP: 1022 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size, 1023 timeout); 1024 break; 1025 case IEEE80211_AMPDU_TX_START: 1026 if (!iwl_enable_tx_ampdu()) { 1027 ret = -EINVAL; 1028 break; 1029 } 1030 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn); 1031 break; 1032 case IEEE80211_AMPDU_TX_STOP_CONT: 1033 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid); 1034 break; 1035 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1036 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1037 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid); 1038 break; 1039 case IEEE80211_AMPDU_TX_OPERATIONAL: 1040 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, 1041 buf_size, amsdu); 1042 break; 1043 default: 1044 WARN_ON_ONCE(1); 1045 ret = -EINVAL; 1046 break; 1047 } 1048 1049 if (!ret) { 1050 u16 rx_ba_ssn = 0; 1051 1052 if (action == IEEE80211_AMPDU_RX_START) 1053 rx_ba_ssn = *ssn; 1054 1055 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid, 1056 rx_ba_ssn, action); 1057 } 1058 mutex_unlock(&mvm->mutex); 1059 1060 return ret; 1061 } 1062 1063 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac, 1064 struct ieee80211_vif *vif) 1065 { 1066 struct iwl_mvm *mvm = data; 1067 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1068 1069 mvmvif->uploaded = false; 1070 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 1071 1072 spin_lock_bh(&mvm->time_event_lock); 1073 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data); 1074 spin_unlock_bh(&mvm->time_event_lock); 1075 1076 mvmvif->phy_ctxt = NULL; 1077 memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data)); 1078 memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data)); 1079 } 1080 1081 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm) 1082 { 1083 iwl_mvm_stop_device(mvm); 1084 1085 mvm->cur_aid = 0; 1086 1087 mvm->scan_status = 0; 1088 mvm->ps_disabled = false; 1089 mvm->rfkill_safe_init_done = false; 1090 1091 /* just in case one was running */ 1092 iwl_mvm_cleanup_roc_te(mvm); 1093 ieee80211_remain_on_channel_expired(mvm->hw); 1094 1095 iwl_mvm_ftm_restart(mvm); 1096 1097 /* 1098 * cleanup all interfaces, even inactive ones, as some might have 1099 * gone down during the HW restart 1100 */ 1101 ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm); 1102 1103 mvm->p2p_device_vif = NULL; 1104 1105 iwl_mvm_reset_phy_ctxts(mvm); 1106 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); 1107 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif)); 1108 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd)); 1109 1110 ieee80211_wake_queues(mvm->hw); 1111 1112 mvm->vif_count = 0; 1113 mvm->rx_ba_sessions = 0; 1114 mvm->fwrt.dump.conf = FW_DBG_INVALID; 1115 mvm->monitor_on = false; 1116 1117 /* keep statistics ticking */ 1118 iwl_mvm_accu_radio_stats(mvm); 1119 } 1120 1121 int __iwl_mvm_mac_start(struct iwl_mvm *mvm) 1122 { 1123 int ret; 1124 1125 lockdep_assert_held(&mvm->mutex); 1126 1127 if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) { 1128 /* 1129 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART 1130 * so later code will - from now on - see that we're doing it. 1131 */ 1132 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1133 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); 1134 /* Clean up some internal and mac80211 state on restart */ 1135 iwl_mvm_restart_cleanup(mvm); 1136 } 1137 ret = iwl_mvm_up(mvm); 1138 1139 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT, 1140 NULL); 1141 iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC, 1142 NULL); 1143 1144 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 1145 /* Something went wrong - we need to finish some cleanup 1146 * that normally iwl_mvm_mac_restart_complete() below 1147 * would do. 1148 */ 1149 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1150 } 1151 1152 return ret; 1153 } 1154 1155 static int iwl_mvm_mac_start(struct ieee80211_hw *hw) 1156 { 1157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1158 int ret; 1159 1160 mutex_lock(&mvm->mutex); 1161 ret = __iwl_mvm_mac_start(mvm); 1162 mutex_unlock(&mvm->mutex); 1163 1164 return ret; 1165 } 1166 1167 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) 1168 { 1169 int ret; 1170 1171 mutex_lock(&mvm->mutex); 1172 1173 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); 1174 1175 ret = iwl_mvm_update_quotas(mvm, true, NULL); 1176 if (ret) 1177 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n", 1178 ret); 1179 1180 iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY); 1181 1182 /* 1183 * If we have TDLS peers, remove them. We don't know the last seqno/PN 1184 * of packets the FW sent out, so we must reconnect. 1185 */ 1186 iwl_mvm_teardown_tdls_peers(mvm); 1187 1188 mutex_unlock(&mvm->mutex); 1189 } 1190 1191 static void 1192 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw, 1193 enum ieee80211_reconfig_type reconfig_type) 1194 { 1195 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1196 1197 switch (reconfig_type) { 1198 case IEEE80211_RECONFIG_TYPE_RESTART: 1199 iwl_mvm_restart_complete(mvm); 1200 break; 1201 case IEEE80211_RECONFIG_TYPE_SUSPEND: 1202 break; 1203 } 1204 } 1205 1206 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm) 1207 { 1208 lockdep_assert_held(&mvm->mutex); 1209 1210 /* firmware counters are obviously reset now, but we shouldn't 1211 * partially track so also clear the fw_reset_accu counters. 1212 */ 1213 memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats)); 1214 1215 /* async_handlers_wk is now blocked */ 1216 1217 /* 1218 * The work item could be running or queued if the 1219 * ROC time event stops just as we get here. 1220 */ 1221 flush_work(&mvm->roc_done_wk); 1222 1223 iwl_mvm_rm_aux_sta(mvm); 1224 1225 iwl_mvm_stop_device(mvm); 1226 1227 iwl_mvm_async_handlers_purge(mvm); 1228 /* async_handlers_list is empty and will stay empty: HW is stopped */ 1229 1230 /* 1231 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the 1232 * hw (as restart_complete() won't be called in this case) and mac80211 1233 * won't execute the restart. 1234 * But make sure to cleanup interfaces that have gone down before/during 1235 * HW restart was requested. 1236 */ 1237 if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) || 1238 test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 1239 &mvm->status)) 1240 ieee80211_iterate_interfaces(mvm->hw, 0, 1241 iwl_mvm_cleanup_iterator, mvm); 1242 1243 /* We shouldn't have any UIDs still set. Loop over all the UIDs to 1244 * make sure there's nothing left there and warn if any is found. 1245 */ 1246 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { 1247 int i; 1248 1249 for (i = 0; i < mvm->max_scans; i++) { 1250 if (WARN_ONCE(mvm->scan_uid_status[i], 1251 "UMAC scan UID %d status was not cleaned\n", 1252 i)) 1253 mvm->scan_uid_status[i] = 0; 1254 } 1255 } 1256 } 1257 1258 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw) 1259 { 1260 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1261 1262 flush_work(&mvm->async_handlers_wk); 1263 flush_work(&mvm->add_stream_wk); 1264 1265 /* 1266 * Lock and clear the firmware running bit here already, so that 1267 * new commands coming in elsewhere, e.g. from debugfs, will not 1268 * be able to proceed. This is important here because one of those 1269 * debugfs files causes the firmware dump to be triggered, and if we 1270 * don't stop debugfs accesses before canceling that it could be 1271 * retriggered after we flush it but before we've cleared the bit. 1272 */ 1273 clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status); 1274 1275 cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork); 1276 cancel_delayed_work_sync(&mvm->scan_timeout_dwork); 1277 1278 mutex_lock(&mvm->mutex); 1279 __iwl_mvm_mac_stop(mvm); 1280 mutex_unlock(&mvm->mutex); 1281 1282 /* 1283 * The worker might have been waiting for the mutex, let it run and 1284 * discover that its list is now empty. 1285 */ 1286 cancel_work_sync(&mvm->async_handlers_wk); 1287 } 1288 1289 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm) 1290 { 1291 u16 i; 1292 1293 lockdep_assert_held(&mvm->mutex); 1294 1295 for (i = 0; i < NUM_PHY_CTX; i++) 1296 if (!mvm->phy_ctxts[i].ref) 1297 return &mvm->phy_ctxts[i]; 1298 1299 IWL_ERR(mvm, "No available PHY context\n"); 1300 return NULL; 1301 } 1302 1303 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 1304 s16 tx_power) 1305 { 1306 int len; 1307 union { 1308 struct iwl_dev_tx_power_cmd v5; 1309 struct iwl_dev_tx_power_cmd_v4 v4; 1310 } cmd = { 1311 .v5.v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC), 1312 .v5.v3.mac_context_id = 1313 cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id), 1314 .v5.v3.pwr_restriction = cpu_to_le16(8 * tx_power), 1315 }; 1316 1317 if (tx_power == IWL_DEFAULT_MAX_TX_POWER) 1318 cmd.v5.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER); 1319 1320 if (fw_has_api(&mvm->fw->ucode_capa, 1321 IWL_UCODE_TLV_API_REDUCE_TX_POWER)) 1322 len = sizeof(cmd.v5); 1323 else if (fw_has_capa(&mvm->fw->ucode_capa, 1324 IWL_UCODE_TLV_CAPA_TX_POWER_ACK)) 1325 len = sizeof(cmd.v4); 1326 else 1327 len = sizeof(cmd.v4.v3); 1328 1329 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd); 1330 } 1331 1332 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, 1333 struct ieee80211_vif *vif) 1334 { 1335 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1336 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1337 int ret; 1338 1339 mutex_lock(&mvm->mutex); 1340 1341 if (mvmvif->csa_failed) { 1342 mvmvif->csa_failed = false; 1343 ret = -EIO; 1344 goto out_unlock; 1345 } 1346 1347 if (vif->type == NL80211_IFTYPE_STATION) { 1348 struct iwl_mvm_sta *mvmsta; 1349 1350 mvmvif->csa_bcn_pending = false; 1351 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, 1352 mvmvif->ap_sta_id); 1353 1354 if (WARN_ON(!mvmsta)) { 1355 ret = -EIO; 1356 goto out_unlock; 1357 } 1358 1359 if (!fw_has_capa(&mvm->fw->ucode_capa, 1360 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 1361 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); 1362 1363 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1364 1365 if (!fw_has_capa(&mvm->fw->ucode_capa, 1366 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 1367 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 1368 if (ret) 1369 goto out_unlock; 1370 1371 iwl_mvm_stop_session_protection(mvm, vif); 1372 } 1373 } 1374 1375 mvmvif->ps_disabled = false; 1376 1377 ret = iwl_mvm_power_update_ps(mvm); 1378 1379 out_unlock: 1380 mutex_unlock(&mvm->mutex); 1381 1382 return ret; 1383 } 1384 1385 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw, 1386 struct ieee80211_vif *vif) 1387 { 1388 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1389 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1390 struct iwl_chan_switch_te_cmd cmd = { 1391 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 1392 mvmvif->color)), 1393 .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE), 1394 }; 1395 1396 IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id); 1397 1398 mutex_lock(&mvm->mutex); 1399 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 1400 WIDE_ID(MAC_CONF_GROUP, 1401 CHANNEL_SWITCH_TIME_EVENT_CMD), 1402 0, sizeof(cmd), &cmd)); 1403 mutex_unlock(&mvm->mutex); 1404 1405 WARN_ON(iwl_mvm_post_channel_switch(hw, vif)); 1406 } 1407 1408 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk) 1409 { 1410 struct iwl_mvm *mvm; 1411 struct iwl_mvm_vif *mvmvif; 1412 struct ieee80211_vif *vif; 1413 1414 mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work); 1415 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); 1416 mvm = mvmvif->mvm; 1417 1418 iwl_mvm_abort_channel_switch(mvm->hw, vif); 1419 ieee80211_chswitch_done(vif, false); 1420 } 1421 1422 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, 1423 struct ieee80211_vif *vif) 1424 { 1425 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1426 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1427 int ret; 1428 1429 mvmvif->mvm = mvm; 1430 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1431 1432 /* 1433 * Not much to do here. The stack will not allow interface 1434 * types or combinations that we didn't advertise, so we 1435 * don't really have to check the types. 1436 */ 1437 1438 mutex_lock(&mvm->mutex); 1439 1440 /* make sure that beacon statistics don't go backwards with FW reset */ 1441 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 1442 mvmvif->beacon_stats.accu_num_beacons += 1443 mvmvif->beacon_stats.num_beacons; 1444 1445 /* Allocate resources for the MAC context, and add it to the fw */ 1446 ret = iwl_mvm_mac_ctxt_init(mvm, vif); 1447 if (ret) 1448 goto out_unlock; 1449 1450 rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif); 1451 1452 /* Counting number of interfaces is needed for legacy PM */ 1453 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1454 mvm->vif_count++; 1455 1456 /* 1457 * The AP binding flow can be done only after the beacon 1458 * template is configured (which happens only in the mac80211 1459 * start_ap() flow), and adding the broadcast station can happen 1460 * only after the binding. 1461 * In addition, since modifying the MAC before adding a bcast 1462 * station is not allowed by the FW, delay the adding of MAC context to 1463 * the point where we can also add the bcast station. 1464 * In short: there's not much we can do at this point, other than 1465 * allocating resources :) 1466 */ 1467 if (vif->type == NL80211_IFTYPE_AP || 1468 vif->type == NL80211_IFTYPE_ADHOC) { 1469 ret = iwl_mvm_alloc_bcast_sta(mvm, vif); 1470 if (ret) { 1471 IWL_ERR(mvm, "Failed to allocate bcast sta\n"); 1472 goto out_release; 1473 } 1474 1475 /* 1476 * Only queue for this station is the mcast queue, 1477 * which shouldn't be in TFD mask anyway 1478 */ 1479 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta, 1480 0, vif->type, 1481 IWL_STA_MULTICAST); 1482 if (ret) 1483 goto out_release; 1484 1485 iwl_mvm_vif_dbgfs_register(mvm, vif); 1486 goto out_unlock; 1487 } 1488 1489 mvmvif->features |= hw->netdev_features; 1490 1491 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 1492 if (ret) 1493 goto out_release; 1494 1495 ret = iwl_mvm_power_update_mac(mvm); 1496 if (ret) 1497 goto out_remove_mac; 1498 1499 /* beacon filtering */ 1500 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 1501 if (ret) 1502 goto out_remove_mac; 1503 1504 if (!mvm->bf_allowed_vif && 1505 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) { 1506 mvm->bf_allowed_vif = mvmvif; 1507 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | 1508 IEEE80211_VIF_SUPPORTS_CQM_RSSI; 1509 } 1510 1511 /* 1512 * P2P_DEVICE interface does not have a channel context assigned to it, 1513 * so a dedicated PHY context is allocated to it and the corresponding 1514 * MAC context is bound to it at this stage. 1515 */ 1516 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1517 1518 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 1519 if (!mvmvif->phy_ctxt) { 1520 ret = -ENOSPC; 1521 goto out_free_bf; 1522 } 1523 1524 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 1525 ret = iwl_mvm_binding_add_vif(mvm, vif); 1526 if (ret) 1527 goto out_unref_phy; 1528 1529 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif); 1530 if (ret) 1531 goto out_unbind; 1532 1533 /* Save a pointer to p2p device vif, so it can later be used to 1534 * update the p2p device MAC when a GO is started/stopped */ 1535 mvm->p2p_device_vif = vif; 1536 } 1537 1538 iwl_mvm_tcm_add_vif(mvm, vif); 1539 INIT_DELAYED_WORK(&mvmvif->csa_work, 1540 iwl_mvm_channel_switch_disconnect_wk); 1541 1542 if (vif->type == NL80211_IFTYPE_MONITOR) 1543 mvm->monitor_on = true; 1544 1545 iwl_mvm_vif_dbgfs_register(mvm, vif); 1546 goto out_unlock; 1547 1548 out_unbind: 1549 iwl_mvm_binding_remove_vif(mvm, vif); 1550 out_unref_phy: 1551 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1552 out_free_bf: 1553 if (mvm->bf_allowed_vif == mvmvif) { 1554 mvm->bf_allowed_vif = NULL; 1555 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1556 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1557 } 1558 out_remove_mac: 1559 mvmvif->phy_ctxt = NULL; 1560 iwl_mvm_mac_ctxt_remove(mvm, vif); 1561 out_release: 1562 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) 1563 mvm->vif_count--; 1564 out_unlock: 1565 mutex_unlock(&mvm->mutex); 1566 1567 return ret; 1568 } 1569 1570 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, 1571 struct ieee80211_vif *vif) 1572 { 1573 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1574 /* 1575 * Flush the ROC worker which will flush the OFFCHANNEL queue. 1576 * We assume here that all the packets sent to the OFFCHANNEL 1577 * queue are sent in ROC session. 1578 */ 1579 flush_work(&mvm->roc_done_wk); 1580 } 1581 } 1582 1583 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, 1584 struct ieee80211_vif *vif) 1585 { 1586 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1587 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1588 struct iwl_probe_resp_data *probe_data; 1589 1590 iwl_mvm_prepare_mac_removal(mvm, vif); 1591 1592 if (!(vif->type == NL80211_IFTYPE_AP || 1593 vif->type == NL80211_IFTYPE_ADHOC)) 1594 iwl_mvm_tcm_rm_vif(mvm, vif); 1595 1596 mutex_lock(&mvm->mutex); 1597 1598 probe_data = rcu_dereference_protected(mvmvif->probe_resp_data, 1599 lockdep_is_held(&mvm->mutex)); 1600 RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL); 1601 if (probe_data) 1602 kfree_rcu(probe_data, rcu_head); 1603 1604 if (mvm->bf_allowed_vif == mvmvif) { 1605 mvm->bf_allowed_vif = NULL; 1606 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER | 1607 IEEE80211_VIF_SUPPORTS_CQM_RSSI); 1608 } 1609 1610 if (vif->bss_conf.ftm_responder) 1611 memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats)); 1612 1613 iwl_mvm_vif_dbgfs_clean(mvm, vif); 1614 1615 /* 1616 * For AP/GO interface, the tear down of the resources allocated to the 1617 * interface is be handled as part of the stop_ap flow. 1618 */ 1619 if (vif->type == NL80211_IFTYPE_AP || 1620 vif->type == NL80211_IFTYPE_ADHOC) { 1621 #ifdef CONFIG_NL80211_TESTMODE 1622 if (vif == mvm->noa_vif) { 1623 mvm->noa_vif = NULL; 1624 mvm->noa_duration = 0; 1625 } 1626 #endif 1627 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta); 1628 iwl_mvm_dealloc_bcast_sta(mvm, vif); 1629 goto out_release; 1630 } 1631 1632 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 1633 mvm->p2p_device_vif = NULL; 1634 iwl_mvm_rm_p2p_bcast_sta(mvm, vif); 1635 iwl_mvm_binding_remove_vif(mvm, vif); 1636 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 1637 mvmvif->phy_ctxt = NULL; 1638 } 1639 1640 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE) 1641 mvm->vif_count--; 1642 1643 iwl_mvm_power_update_mac(mvm); 1644 iwl_mvm_mac_ctxt_remove(mvm, vif); 1645 1646 RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL); 1647 1648 if (vif->type == NL80211_IFTYPE_MONITOR) 1649 mvm->monitor_on = false; 1650 1651 out_release: 1652 mutex_unlock(&mvm->mutex); 1653 } 1654 1655 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed) 1656 { 1657 return 0; 1658 } 1659 1660 struct iwl_mvm_mc_iter_data { 1661 struct iwl_mvm *mvm; 1662 int port_id; 1663 }; 1664 1665 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac, 1666 struct ieee80211_vif *vif) 1667 { 1668 struct iwl_mvm_mc_iter_data *data = _data; 1669 struct iwl_mvm *mvm = data->mvm; 1670 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd; 1671 struct iwl_host_cmd hcmd = { 1672 .id = MCAST_FILTER_CMD, 1673 .flags = CMD_ASYNC, 1674 .dataflags[0] = IWL_HCMD_DFL_NOCOPY, 1675 }; 1676 int ret, len; 1677 1678 /* if we don't have free ports, mcast frames will be dropped */ 1679 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM)) 1680 return; 1681 1682 if (vif->type != NL80211_IFTYPE_STATION || 1683 !vif->bss_conf.assoc) 1684 return; 1685 1686 cmd->port_id = data->port_id++; 1687 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 1688 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4); 1689 1690 hcmd.len[0] = len; 1691 hcmd.data[0] = cmd; 1692 1693 ret = iwl_mvm_send_cmd(mvm, &hcmd); 1694 if (ret) 1695 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret); 1696 } 1697 1698 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm) 1699 { 1700 struct iwl_mvm_mc_iter_data iter_data = { 1701 .mvm = mvm, 1702 }; 1703 1704 lockdep_assert_held(&mvm->mutex); 1705 1706 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd)) 1707 return; 1708 1709 ieee80211_iterate_active_interfaces_atomic( 1710 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1711 iwl_mvm_mc_iface_iterator, &iter_data); 1712 } 1713 1714 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw, 1715 struct netdev_hw_addr_list *mc_list) 1716 { 1717 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1718 struct iwl_mcast_filter_cmd *cmd; 1719 struct netdev_hw_addr *addr; 1720 int addr_count; 1721 bool pass_all; 1722 int len; 1723 1724 addr_count = netdev_hw_addr_list_count(mc_list); 1725 pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES || 1726 IWL_MVM_FW_MCAST_FILTER_PASS_ALL; 1727 if (pass_all) 1728 addr_count = 0; 1729 1730 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4); 1731 cmd = kzalloc(len, GFP_ATOMIC); 1732 if (!cmd) 1733 return 0; 1734 1735 if (pass_all) { 1736 cmd->pass_all = 1; 1737 return (u64)(unsigned long)cmd; 1738 } 1739 1740 netdev_hw_addr_list_for_each(addr, mc_list) { 1741 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n", 1742 cmd->count, addr->addr); 1743 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN], 1744 addr->addr, ETH_ALEN); 1745 cmd->count++; 1746 } 1747 1748 return (u64)(unsigned long)cmd; 1749 } 1750 1751 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw, 1752 unsigned int changed_flags, 1753 unsigned int *total_flags, 1754 u64 multicast) 1755 { 1756 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1757 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast; 1758 1759 mutex_lock(&mvm->mutex); 1760 1761 /* replace previous configuration */ 1762 kfree(mvm->mcast_filter_cmd); 1763 mvm->mcast_filter_cmd = cmd; 1764 1765 if (!cmd) 1766 goto out; 1767 1768 if (changed_flags & FIF_ALLMULTI) 1769 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI); 1770 1771 if (cmd->pass_all) 1772 cmd->count = 0; 1773 1774 iwl_mvm_recalc_multicast(mvm); 1775 out: 1776 mutex_unlock(&mvm->mutex); 1777 *total_flags = 0; 1778 } 1779 1780 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw, 1781 struct ieee80211_vif *vif, 1782 unsigned int filter_flags, 1783 unsigned int changed_flags) 1784 { 1785 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 1786 1787 /* We support only filter for probe requests */ 1788 if (!(changed_flags & FIF_PROBE_REQ)) 1789 return; 1790 1791 /* Supported only for p2p client interfaces */ 1792 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc || 1793 !vif->p2p) 1794 return; 1795 1796 mutex_lock(&mvm->mutex); 1797 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 1798 mutex_unlock(&mvm->mutex); 1799 } 1800 1801 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING 1802 struct iwl_bcast_iter_data { 1803 struct iwl_mvm *mvm; 1804 struct iwl_bcast_filter_cmd *cmd; 1805 u8 current_filter; 1806 }; 1807 1808 static void 1809 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif, 1810 const struct iwl_fw_bcast_filter *in_filter, 1811 struct iwl_fw_bcast_filter *out_filter) 1812 { 1813 struct iwl_fw_bcast_filter_attr *attr; 1814 int i; 1815 1816 memcpy(out_filter, in_filter, sizeof(*out_filter)); 1817 1818 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) { 1819 attr = &out_filter->attrs[i]; 1820 1821 if (!attr->mask) 1822 break; 1823 1824 switch (attr->reserved1) { 1825 case cpu_to_le16(BC_FILTER_MAGIC_IP): 1826 if (vif->bss_conf.arp_addr_cnt != 1) { 1827 attr->mask = 0; 1828 continue; 1829 } 1830 1831 attr->val = vif->bss_conf.arp_addr_list[0]; 1832 break; 1833 case cpu_to_le16(BC_FILTER_MAGIC_MAC): 1834 attr->val = *(__be32 *)&vif->addr[2]; 1835 break; 1836 default: 1837 break; 1838 } 1839 attr->reserved1 = 0; 1840 out_filter->num_attrs++; 1841 } 1842 } 1843 1844 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac, 1845 struct ieee80211_vif *vif) 1846 { 1847 struct iwl_bcast_iter_data *data = _data; 1848 struct iwl_mvm *mvm = data->mvm; 1849 struct iwl_bcast_filter_cmd *cmd = data->cmd; 1850 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 1851 struct iwl_fw_bcast_mac *bcast_mac; 1852 int i; 1853 1854 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs))) 1855 return; 1856 1857 bcast_mac = &cmd->macs[mvmvif->id]; 1858 1859 /* 1860 * enable filtering only for associated stations, but not for P2P 1861 * Clients 1862 */ 1863 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p || 1864 !vif->bss_conf.assoc) 1865 return; 1866 1867 bcast_mac->default_discard = 1; 1868 1869 /* copy all configured filters */ 1870 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) { 1871 /* 1872 * Make sure we don't exceed our filters limit. 1873 * if there is still a valid filter to be configured, 1874 * be on the safe side and just allow bcast for this mac. 1875 */ 1876 if (WARN_ON_ONCE(data->current_filter >= 1877 ARRAY_SIZE(cmd->filters))) { 1878 bcast_mac->default_discard = 0; 1879 bcast_mac->attached_filters = 0; 1880 break; 1881 } 1882 1883 iwl_mvm_set_bcast_filter(vif, 1884 &mvm->bcast_filters[i], 1885 &cmd->filters[data->current_filter]); 1886 1887 /* skip current filter if it contains no attributes */ 1888 if (!cmd->filters[data->current_filter].num_attrs) 1889 continue; 1890 1891 /* attach the filter to current mac */ 1892 bcast_mac->attached_filters |= 1893 cpu_to_le16(BIT(data->current_filter)); 1894 1895 data->current_filter++; 1896 } 1897 } 1898 1899 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm, 1900 struct iwl_bcast_filter_cmd *cmd) 1901 { 1902 struct iwl_bcast_iter_data iter_data = { 1903 .mvm = mvm, 1904 .cmd = cmd, 1905 }; 1906 1907 if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL) 1908 return false; 1909 1910 memset(cmd, 0, sizeof(*cmd)); 1911 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters); 1912 cmd->max_macs = ARRAY_SIZE(cmd->macs); 1913 1914 #ifdef CONFIG_IWLWIFI_DEBUGFS 1915 /* use debugfs filters/macs if override is configured */ 1916 if (mvm->dbgfs_bcast_filtering.override) { 1917 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters, 1918 sizeof(cmd->filters)); 1919 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs, 1920 sizeof(cmd->macs)); 1921 return true; 1922 } 1923 #endif 1924 1925 /* if no filters are configured, do nothing */ 1926 if (!mvm->bcast_filters) 1927 return false; 1928 1929 /* configure and attach these filters for each associated sta vif */ 1930 ieee80211_iterate_active_interfaces( 1931 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1932 iwl_mvm_bcast_filter_iterator, &iter_data); 1933 1934 return true; 1935 } 1936 1937 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1938 { 1939 struct iwl_bcast_filter_cmd cmd; 1940 1941 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING)) 1942 return 0; 1943 1944 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) 1945 return 0; 1946 1947 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, 1948 sizeof(cmd), &cmd); 1949 } 1950 #else 1951 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm) 1952 { 1953 return 0; 1954 } 1955 #endif 1956 1957 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm, 1958 struct ieee80211_vif *vif) 1959 { 1960 struct iwl_mu_group_mgmt_cmd cmd = {}; 1961 1962 memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership, 1963 WLAN_MEMBERSHIP_LEN); 1964 memcpy(cmd.user_position, vif->bss_conf.mu_group.position, 1965 WLAN_USER_POSITION_LEN); 1966 1967 return iwl_mvm_send_cmd_pdu(mvm, 1968 WIDE_ID(DATA_PATH_GROUP, 1969 UPDATE_MU_GROUPS_CMD), 1970 0, sizeof(cmd), &cmd); 1971 } 1972 1973 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac, 1974 struct ieee80211_vif *vif) 1975 { 1976 if (vif->mu_mimo_owner) { 1977 struct iwl_mu_group_mgmt_notif *notif = _data; 1978 1979 /* 1980 * MU-MIMO Group Id action frame is little endian. We treat 1981 * the data received from firmware as if it came from the 1982 * action frame, so no conversion is needed. 1983 */ 1984 ieee80211_update_mu_groups(vif, 1985 (u8 *)¬if->membership_status, 1986 (u8 *)¬if->user_position); 1987 } 1988 } 1989 1990 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm, 1991 struct iwl_rx_cmd_buffer *rxb) 1992 { 1993 struct iwl_rx_packet *pkt = rxb_addr(rxb); 1994 struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data; 1995 1996 ieee80211_iterate_active_interfaces_atomic( 1997 mvm->hw, IEEE80211_IFACE_ITER_NORMAL, 1998 iwl_mvm_mu_mimo_iface_iterator, notif); 1999 } 2000 2001 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit) 2002 { 2003 u8 byte_num = ppe_pos_bit / 8; 2004 u8 bit_num = ppe_pos_bit % 8; 2005 u8 residue_bits; 2006 u8 res; 2007 2008 if (bit_num <= 5) 2009 return (ppe[byte_num] >> bit_num) & 2010 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1); 2011 2012 /* 2013 * If bit_num > 5, we have to combine bits with next byte. 2014 * Calculate how many bits we need to take from current byte (called 2015 * here "residue_bits"), and add them to bits from next byte. 2016 */ 2017 2018 residue_bits = 8 - bit_num; 2019 2020 res = (ppe[byte_num + 1] & 2021 (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) << 2022 residue_bits; 2023 res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1); 2024 2025 return res; 2026 } 2027 2028 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm, 2029 struct ieee80211_vif *vif, u8 sta_id) 2030 { 2031 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2032 struct iwl_he_sta_context_cmd sta_ctxt_cmd = { 2033 .sta_id = sta_id, 2034 .tid_limit = IWL_MAX_TID_COUNT, 2035 .bss_color = vif->bss_conf.he_bss_color.color, 2036 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext, 2037 .frame_time_rts_th = 2038 cpu_to_le16(vif->bss_conf.frame_time_rts_th), 2039 }; 2040 int size = fw_has_api(&mvm->fw->ucode_capa, 2041 IWL_UCODE_TLV_API_MBSSID_HE) ? 2042 sizeof(sta_ctxt_cmd) : 2043 sizeof(struct iwl_he_sta_context_cmd_v1); 2044 struct ieee80211_sta *sta; 2045 u32 flags; 2046 int i; 2047 2048 rcu_read_lock(); 2049 2050 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]); 2051 if (IS_ERR_OR_NULL(sta)) { 2052 rcu_read_unlock(); 2053 WARN(1, "Can't find STA to configure HE\n"); 2054 return; 2055 } 2056 2057 if (!sta->he_cap.has_he) { 2058 rcu_read_unlock(); 2059 return; 2060 } 2061 2062 flags = 0; 2063 2064 /* Block 26-tone RU OFDMA transmissions */ 2065 if (mvmvif->he_ru_2mhz_block) 2066 flags |= STA_CTXT_HE_RU_2MHZ_BLOCK; 2067 2068 /* HTC flags */ 2069 if (sta->he_cap.he_cap_elem.mac_cap_info[0] & 2070 IEEE80211_HE_MAC_CAP0_HTC_HE) 2071 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT); 2072 if ((sta->he_cap.he_cap_elem.mac_cap_info[1] & 2073 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) || 2074 (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2075 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) { 2076 u8 link_adap = 2077 ((sta->he_cap.he_cap_elem.mac_cap_info[2] & 2078 IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) + 2079 (sta->he_cap.he_cap_elem.mac_cap_info[1] & 2080 IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION); 2081 2082 if (link_adap == 2) 2083 sta_ctxt_cmd.htc_flags |= 2084 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED); 2085 else if (link_adap == 3) 2086 sta_ctxt_cmd.htc_flags |= 2087 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH); 2088 } 2089 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR) 2090 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP); 2091 if (sta->he_cap.he_cap_elem.mac_cap_info[3] & 2092 IEEE80211_HE_MAC_CAP3_OMI_CONTROL) 2093 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP); 2094 if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR) 2095 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP); 2096 2097 /* 2098 * Initialize the PPE thresholds to "None" (7), as described in Table 2099 * 9-262ac of 80211.ax/D3.0. 2100 */ 2101 memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext)); 2102 2103 /* If PPE Thresholds exist, parse them into a FW-familiar format. */ 2104 if (sta->he_cap.he_cap_elem.phy_cap_info[6] & 2105 IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) { 2106 u8 nss = (sta->he_cap.ppe_thres[0] & 2107 IEEE80211_PPE_THRES_NSS_MASK) + 1; 2108 u8 ru_index_bitmap = 2109 (sta->he_cap.ppe_thres[0] & 2110 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >> 2111 IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS; 2112 u8 *ppe = &sta->he_cap.ppe_thres[0]; 2113 u8 ppe_pos_bit = 7; /* Starting after PPE header */ 2114 2115 /* 2116 * FW currently supports only nss == MAX_HE_SUPP_NSS 2117 * 2118 * If nss > MAX: we can ignore values we don't support 2119 * If nss < MAX: we can set zeros in other streams 2120 */ 2121 if (nss > MAX_HE_SUPP_NSS) { 2122 IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss, 2123 MAX_HE_SUPP_NSS); 2124 nss = MAX_HE_SUPP_NSS; 2125 } 2126 2127 for (i = 0; i < nss; i++) { 2128 u8 ru_index_tmp = ru_index_bitmap << 1; 2129 u8 bw; 2130 2131 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) { 2132 ru_index_tmp >>= 1; 2133 if (!(ru_index_tmp & 1)) 2134 continue; 2135 2136 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] = 2137 iwl_mvm_he_get_ppe_val(ppe, 2138 ppe_pos_bit); 2139 ppe_pos_bit += 2140 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2141 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] = 2142 iwl_mvm_he_get_ppe_val(ppe, 2143 ppe_pos_bit); 2144 ppe_pos_bit += 2145 IEEE80211_PPE_THRES_INFO_PPET_SIZE; 2146 } 2147 } 2148 2149 flags |= STA_CTXT_HE_PACKET_EXT; 2150 } else if ((sta->he_cap.he_cap_elem.phy_cap_info[9] & 2151 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) != 2152 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED) { 2153 int low_th = -1; 2154 int high_th = -1; 2155 2156 /* Take the PPE thresholds from the nominal padding info */ 2157 switch (sta->he_cap.he_cap_elem.phy_cap_info[9] & 2158 IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK) { 2159 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US: 2160 low_th = IWL_HE_PKT_EXT_NONE; 2161 high_th = IWL_HE_PKT_EXT_NONE; 2162 break; 2163 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US: 2164 low_th = IWL_HE_PKT_EXT_BPSK; 2165 high_th = IWL_HE_PKT_EXT_NONE; 2166 break; 2167 case IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US: 2168 low_th = IWL_HE_PKT_EXT_NONE; 2169 high_th = IWL_HE_PKT_EXT_BPSK; 2170 break; 2171 } 2172 2173 /* Set the PPE thresholds accordingly */ 2174 if (low_th >= 0 && high_th >= 0) { 2175 struct iwl_he_pkt_ext *pkt_ext = 2176 (struct iwl_he_pkt_ext *)&sta_ctxt_cmd.pkt_ext; 2177 2178 for (i = 0; i < MAX_HE_SUPP_NSS; i++) { 2179 u8 bw; 2180 2181 for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; 2182 bw++) { 2183 pkt_ext->pkt_ext_qam_th[i][bw][0] = 2184 low_th; 2185 pkt_ext->pkt_ext_qam_th[i][bw][1] = 2186 high_th; 2187 } 2188 } 2189 2190 flags |= STA_CTXT_HE_PACKET_EXT; 2191 } 2192 } 2193 2194 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2195 IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP) 2196 flags |= STA_CTXT_HE_32BIT_BA_BITMAP; 2197 2198 if (sta->he_cap.he_cap_elem.mac_cap_info[2] & 2199 IEEE80211_HE_MAC_CAP2_ACK_EN) 2200 flags |= STA_CTXT_HE_ACK_ENABLED; 2201 2202 rcu_read_unlock(); 2203 2204 /* Mark MU EDCA as enabled, unless none detected on some AC */ 2205 flags |= STA_CTXT_HE_MU_EDCA_CW; 2206 for (i = 0; i < IEEE80211_NUM_ACS; i++) { 2207 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca = 2208 &mvmvif->queue_params[i].mu_edca_param_rec; 2209 u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i); 2210 2211 if (!mvmvif->queue_params[i].mu_edca) { 2212 flags &= ~STA_CTXT_HE_MU_EDCA_CW; 2213 break; 2214 } 2215 2216 sta_ctxt_cmd.trig_based_txf[ac].cwmin = 2217 cpu_to_le16(mu_edca->ecw_min_max & 0xf); 2218 sta_ctxt_cmd.trig_based_txf[ac].cwmax = 2219 cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4); 2220 sta_ctxt_cmd.trig_based_txf[ac].aifsn = 2221 cpu_to_le16(mu_edca->aifsn); 2222 sta_ctxt_cmd.trig_based_txf[ac].mu_time = 2223 cpu_to_le16(mu_edca->mu_edca_timer); 2224 } 2225 2226 2227 if (vif->bss_conf.uora_exists) { 2228 flags |= STA_CTXT_HE_TRIG_RND_ALLOC; 2229 2230 sta_ctxt_cmd.rand_alloc_ecwmin = 2231 vif->bss_conf.uora_ocw_range & 0x7; 2232 sta_ctxt_cmd.rand_alloc_ecwmax = 2233 (vif->bss_conf.uora_ocw_range >> 3) & 0x7; 2234 } 2235 2236 if (vif->bss_conf.nontransmitted) { 2237 flags |= STA_CTXT_HE_REF_BSSID_VALID; 2238 ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr, 2239 vif->bss_conf.transmitter_bssid); 2240 sta_ctxt_cmd.max_bssid_indicator = 2241 vif->bss_conf.bssid_indicator; 2242 sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index; 2243 sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap; 2244 sta_ctxt_cmd.profile_periodicity = 2245 vif->bss_conf.profile_periodicity; 2246 } 2247 2248 sta_ctxt_cmd.flags = cpu_to_le32(flags); 2249 2250 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD, 2251 DATA_PATH_GROUP, 0), 2252 0, size, &sta_ctxt_cmd)) 2253 IWL_ERR(mvm, "Failed to config FW to work HE!\n"); 2254 } 2255 2256 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm, 2257 struct ieee80211_vif *vif, 2258 struct ieee80211_bss_conf *bss_conf, 2259 u32 changes) 2260 { 2261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2262 int ret; 2263 2264 /* 2265 * Re-calculate the tsf id, as the master-slave relations depend on the 2266 * beacon interval, which was not known when the station interface was 2267 * added. 2268 */ 2269 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { 2270 if (vif->bss_conf.he_support && 2271 !iwlwifi_mod_params.disable_11ax) 2272 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2273 2274 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2275 } 2276 2277 /* Update MU EDCA params */ 2278 if (changes & BSS_CHANGED_QOS && mvmvif->associated && 2279 bss_conf->assoc && vif->bss_conf.he_support && 2280 !iwlwifi_mod_params.disable_11ax) 2281 iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id); 2282 2283 /* 2284 * If we're not associated yet, take the (new) BSSID before associating 2285 * so the firmware knows. If we're already associated, then use the old 2286 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC 2287 * branch for disassociation below. 2288 */ 2289 if (changes & BSS_CHANGED_BSSID && !mvmvif->associated) 2290 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2291 2292 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid); 2293 if (ret) 2294 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2295 2296 /* after sending it once, adopt mac80211 data */ 2297 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN); 2298 mvmvif->associated = bss_conf->assoc; 2299 2300 if (changes & BSS_CHANGED_ASSOC) { 2301 if (bss_conf->assoc) { 2302 /* clear statistics to get clean beacon counter */ 2303 iwl_mvm_request_statistics(mvm, true); 2304 memset(&mvmvif->beacon_stats, 0, 2305 sizeof(mvmvif->beacon_stats)); 2306 2307 /* add quota for this interface */ 2308 ret = iwl_mvm_update_quotas(mvm, true, NULL); 2309 if (ret) { 2310 IWL_ERR(mvm, "failed to update quotas\n"); 2311 return; 2312 } 2313 2314 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2315 &mvm->status) && 2316 !fw_has_capa(&mvm->fw->ucode_capa, 2317 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) { 2318 /* 2319 * If we're restarting then the firmware will 2320 * obviously have lost synchronisation with 2321 * the AP. It will attempt to synchronise by 2322 * itself, but we can make it more reliable by 2323 * scheduling a session protection time event. 2324 * 2325 * The firmware needs to receive a beacon to 2326 * catch up with synchronisation, use 110% of 2327 * the beacon interval. 2328 * 2329 * Set a large maximum delay to allow for more 2330 * than a single interface. 2331 * 2332 * For new firmware versions, rely on the 2333 * firmware. This is relevant for DCM scenarios 2334 * only anyway. 2335 */ 2336 u32 dur = (11 * vif->bss_conf.beacon_int) / 10; 2337 iwl_mvm_protect_session(mvm, vif, dur, dur, 2338 5 * dur, false); 2339 } 2340 2341 iwl_mvm_sf_update(mvm, vif, false); 2342 iwl_mvm_power_vif_assoc(mvm, vif); 2343 if (vif->p2p) { 2344 iwl_mvm_update_smps(mvm, vif, 2345 IWL_MVM_SMPS_REQ_PROT, 2346 IEEE80211_SMPS_DYNAMIC); 2347 } 2348 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) { 2349 /* 2350 * If update fails - SF might be running in associated 2351 * mode while disassociated - which is forbidden. 2352 */ 2353 ret = iwl_mvm_sf_update(mvm, vif, false); 2354 WARN_ONCE(ret && 2355 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 2356 &mvm->status), 2357 "Failed to update SF upon disassociation\n"); 2358 2359 /* 2360 * If we get an assert during the connection (after the 2361 * station has been added, but before the vif is set 2362 * to associated), mac80211 will re-add the station and 2363 * then configure the vif. Since the vif is not 2364 * associated, we would remove the station here and 2365 * this would fail the recovery. 2366 */ 2367 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, 2368 &mvm->status)) { 2369 /* 2370 * Remove AP station now that 2371 * the MAC is unassoc 2372 */ 2373 ret = iwl_mvm_rm_sta_id(mvm, vif, 2374 mvmvif->ap_sta_id); 2375 if (ret) 2376 IWL_ERR(mvm, 2377 "failed to remove AP station\n"); 2378 2379 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA; 2380 } 2381 2382 /* remove quota for this interface */ 2383 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2384 if (ret) 2385 IWL_ERR(mvm, "failed to update quotas\n"); 2386 2387 /* this will take the cleared BSSID from bss_conf */ 2388 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 2389 if (ret) 2390 IWL_ERR(mvm, 2391 "failed to update MAC %pM (clear after unassoc)\n", 2392 vif->addr); 2393 } 2394 2395 /* 2396 * The firmware tracks the MU-MIMO group on its own. 2397 * However, on HW restart we should restore this data. 2398 */ 2399 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 2400 (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) { 2401 ret = iwl_mvm_update_mu_groups(mvm, vif); 2402 if (ret) 2403 IWL_ERR(mvm, 2404 "failed to update VHT MU_MIMO groups\n"); 2405 } 2406 2407 iwl_mvm_recalc_multicast(mvm); 2408 iwl_mvm_configure_bcast_filter(mvm); 2409 2410 /* reset rssi values */ 2411 mvmvif->bf_data.ave_beacon_signal = 0; 2412 2413 iwl_mvm_bt_coex_vif_change(mvm); 2414 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT, 2415 IEEE80211_SMPS_AUTOMATIC); 2416 if (fw_has_capa(&mvm->fw->ucode_capa, 2417 IWL_UCODE_TLV_CAPA_UMAC_SCAN)) 2418 iwl_mvm_config_scan(mvm); 2419 } 2420 2421 if (changes & BSS_CHANGED_BEACON_INFO) { 2422 /* 2423 * We received a beacon from the associated AP so 2424 * remove the session protection. 2425 * A firmware with the new API will remove it automatically. 2426 */ 2427 if (!fw_has_capa(&mvm->fw->ucode_capa, 2428 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 2429 iwl_mvm_stop_session_protection(mvm, vif); 2430 2431 iwl_mvm_sf_update(mvm, vif, false); 2432 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 2433 } 2434 2435 if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS | 2436 /* 2437 * Send power command on every beacon change, 2438 * because we may have not enabled beacon abort yet. 2439 */ 2440 BSS_CHANGED_BEACON_INFO)) { 2441 ret = iwl_mvm_power_update_mac(mvm); 2442 if (ret) 2443 IWL_ERR(mvm, "failed to update power mode\n"); 2444 } 2445 2446 if (changes & BSS_CHANGED_TXPOWER) { 2447 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2448 bss_conf->txpower); 2449 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2450 } 2451 2452 if (changes & BSS_CHANGED_CQM) { 2453 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n"); 2454 /* reset cqm events tracking */ 2455 mvmvif->bf_data.last_cqm_event = 0; 2456 if (mvmvif->bf_data.bf_enabled) { 2457 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); 2458 if (ret) 2459 IWL_ERR(mvm, 2460 "failed to update CQM thresholds\n"); 2461 } 2462 } 2463 2464 if (changes & BSS_CHANGED_ARP_FILTER) { 2465 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n"); 2466 iwl_mvm_configure_bcast_filter(mvm); 2467 } 2468 } 2469 2470 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw, 2471 struct ieee80211_vif *vif) 2472 { 2473 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2474 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2475 int ret, i; 2476 2477 mutex_lock(&mvm->mutex); 2478 2479 /* Send the beacon template */ 2480 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif); 2481 if (ret) 2482 goto out_unlock; 2483 2484 /* 2485 * Re-calculate the tsf id, as the master-slave relations depend on the 2486 * beacon interval, which was not known when the AP interface was added. 2487 */ 2488 if (vif->type == NL80211_IFTYPE_AP) 2489 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif); 2490 2491 mvmvif->ap_assoc_sta_count = 0; 2492 2493 /* Add the mac context */ 2494 ret = iwl_mvm_mac_ctxt_add(mvm, vif); 2495 if (ret) 2496 goto out_unlock; 2497 2498 /* Perform the binding */ 2499 ret = iwl_mvm_binding_add_vif(mvm, vif); 2500 if (ret) 2501 goto out_remove; 2502 2503 /* 2504 * This is not very nice, but the simplest: 2505 * For older FWs adding the mcast sta before the bcast station may 2506 * cause assert 0x2b00. 2507 * This is fixed in later FW so make the order of removal depend on 2508 * the TLV 2509 */ 2510 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) { 2511 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2512 if (ret) 2513 goto out_unbind; 2514 /* 2515 * Send the bcast station. At this stage the TBTT and DTIM time 2516 * events are added and applied to the scheduler 2517 */ 2518 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2519 if (ret) { 2520 iwl_mvm_rm_mcast_sta(mvm, vif); 2521 goto out_unbind; 2522 } 2523 } else { 2524 /* 2525 * Send the bcast station. At this stage the TBTT and DTIM time 2526 * events are added and applied to the scheduler 2527 */ 2528 ret = iwl_mvm_send_add_bcast_sta(mvm, vif); 2529 if (ret) 2530 goto out_unbind; 2531 ret = iwl_mvm_add_mcast_sta(mvm, vif); 2532 if (ret) { 2533 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2534 goto out_unbind; 2535 } 2536 } 2537 2538 /* must be set before quota calculations */ 2539 mvmvif->ap_ibss_active = true; 2540 2541 /* send all the early keys to the device now */ 2542 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 2543 struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i]; 2544 2545 if (!key) 2546 continue; 2547 2548 mvmvif->ap_early_keys[i] = NULL; 2549 2550 ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); 2551 if (ret) 2552 goto out_quota_failed; 2553 } 2554 2555 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2556 iwl_mvm_vif_set_low_latency(mvmvif, true, 2557 LOW_LATENCY_VIF_TYPE); 2558 iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id); 2559 } 2560 2561 /* power updated needs to be done before quotas */ 2562 iwl_mvm_power_update_mac(mvm); 2563 2564 ret = iwl_mvm_update_quotas(mvm, false, NULL); 2565 if (ret) 2566 goto out_quota_failed; 2567 2568 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2569 if (vif->p2p && mvm->p2p_device_vif) 2570 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2571 2572 iwl_mvm_bt_coex_vif_change(mvm); 2573 2574 /* we don't support TDLS during DCM */ 2575 if (iwl_mvm_phy_ctx_count(mvm) > 1) 2576 iwl_mvm_teardown_tdls_peers(mvm); 2577 2578 iwl_mvm_ftm_restart_responder(mvm, vif); 2579 2580 goto out_unlock; 2581 2582 out_quota_failed: 2583 iwl_mvm_power_update_mac(mvm); 2584 mvmvif->ap_ibss_active = false; 2585 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2586 iwl_mvm_rm_mcast_sta(mvm, vif); 2587 out_unbind: 2588 iwl_mvm_binding_remove_vif(mvm, vif); 2589 out_remove: 2590 iwl_mvm_mac_ctxt_remove(mvm, vif); 2591 out_unlock: 2592 mutex_unlock(&mvm->mutex); 2593 return ret; 2594 } 2595 2596 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw, 2597 struct ieee80211_vif *vif) 2598 { 2599 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2600 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2601 2602 iwl_mvm_prepare_mac_removal(mvm, vif); 2603 2604 mutex_lock(&mvm->mutex); 2605 2606 /* Handle AP stop while in CSA */ 2607 if (rcu_access_pointer(mvm->csa_vif) == vif) { 2608 iwl_mvm_remove_time_event(mvm, mvmvif, 2609 &mvmvif->time_event_data); 2610 RCU_INIT_POINTER(mvm->csa_vif, NULL); 2611 mvmvif->csa_countdown = false; 2612 } 2613 2614 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) { 2615 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL); 2616 mvm->csa_tx_block_bcn_timeout = 0; 2617 } 2618 2619 mvmvif->ap_ibss_active = false; 2620 mvm->ap_last_beacon_gp2 = 0; 2621 2622 if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) { 2623 iwl_mvm_vif_set_low_latency(mvmvif, false, 2624 LOW_LATENCY_VIF_TYPE); 2625 iwl_mvm_send_low_latency_cmd(mvm, false, mvmvif->id); 2626 } 2627 2628 iwl_mvm_bt_coex_vif_change(mvm); 2629 2630 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */ 2631 if (vif->p2p && mvm->p2p_device_vif) 2632 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL); 2633 2634 iwl_mvm_update_quotas(mvm, false, NULL); 2635 2636 /* 2637 * This is not very nice, but the simplest: 2638 * For older FWs removing the mcast sta before the bcast station may 2639 * cause assert 0x2b00. 2640 * This is fixed in later FW (which will stop beaconing when removing 2641 * bcast station). 2642 * So make the order of removal depend on the TLV 2643 */ 2644 if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2645 iwl_mvm_rm_mcast_sta(mvm, vif); 2646 iwl_mvm_send_rm_bcast_sta(mvm, vif); 2647 if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) 2648 iwl_mvm_rm_mcast_sta(mvm, vif); 2649 iwl_mvm_binding_remove_vif(mvm, vif); 2650 2651 iwl_mvm_power_update_mac(mvm); 2652 2653 iwl_mvm_mac_ctxt_remove(mvm, vif); 2654 2655 mutex_unlock(&mvm->mutex); 2656 } 2657 2658 static void 2659 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm, 2660 struct ieee80211_vif *vif, 2661 struct ieee80211_bss_conf *bss_conf, 2662 u32 changes) 2663 { 2664 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 2665 2666 /* Changes will be applied when the AP/IBSS is started */ 2667 if (!mvmvif->ap_ibss_active) 2668 return; 2669 2670 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT | 2671 BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) && 2672 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL)) 2673 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr); 2674 2675 /* Need to send a new beacon template to the FW */ 2676 if (changes & BSS_CHANGED_BEACON && 2677 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif)) 2678 IWL_WARN(mvm, "Failed updating beacon data\n"); 2679 2680 if (changes & BSS_CHANGED_TXPOWER) { 2681 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n", 2682 bss_conf->txpower); 2683 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower); 2684 } 2685 2686 if (changes & BSS_CHANGED_FTM_RESPONDER) { 2687 int ret = iwl_mvm_ftm_start_responder(mvm, vif); 2688 2689 if (ret) 2690 IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n", 2691 ret); 2692 } 2693 2694 } 2695 2696 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw, 2697 struct ieee80211_vif *vif, 2698 struct ieee80211_bss_conf *bss_conf, 2699 u32 changes) 2700 { 2701 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2702 2703 mutex_lock(&mvm->mutex); 2704 2705 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle) 2706 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); 2707 2708 switch (vif->type) { 2709 case NL80211_IFTYPE_STATION: 2710 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes); 2711 break; 2712 case NL80211_IFTYPE_AP: 2713 case NL80211_IFTYPE_ADHOC: 2714 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes); 2715 break; 2716 case NL80211_IFTYPE_MONITOR: 2717 if (changes & BSS_CHANGED_MU_GROUPS) 2718 iwl_mvm_update_mu_groups(mvm, vif); 2719 break; 2720 default: 2721 /* shouldn't happen */ 2722 WARN_ON_ONCE(1); 2723 } 2724 2725 mutex_unlock(&mvm->mutex); 2726 } 2727 2728 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw, 2729 struct ieee80211_vif *vif, 2730 struct ieee80211_scan_request *hw_req) 2731 { 2732 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2733 int ret; 2734 2735 if (hw_req->req.n_channels == 0 || 2736 hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) 2737 return -EINVAL; 2738 2739 mutex_lock(&mvm->mutex); 2740 ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies); 2741 mutex_unlock(&mvm->mutex); 2742 2743 return ret; 2744 } 2745 2746 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw, 2747 struct ieee80211_vif *vif) 2748 { 2749 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2750 2751 mutex_lock(&mvm->mutex); 2752 2753 /* Due to a race condition, it's possible that mac80211 asks 2754 * us to stop a hw_scan when it's already stopped. This can 2755 * happen, for instance, if we stopped the scan ourselves, 2756 * called ieee80211_scan_completed() and the userspace called 2757 * cancel scan scan before ieee80211_scan_work() could run. 2758 * To handle that, simply return if the scan is not running. 2759 */ 2760 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) 2761 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); 2762 2763 mutex_unlock(&mvm->mutex); 2764 } 2765 2766 static void 2767 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw, 2768 struct ieee80211_sta *sta, u16 tids, 2769 int num_frames, 2770 enum ieee80211_frame_release_type reason, 2771 bool more_data) 2772 { 2773 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2774 2775 /* Called when we need to transmit (a) frame(s) from mac80211 */ 2776 2777 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2778 tids, more_data, false); 2779 } 2780 2781 static void 2782 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw, 2783 struct ieee80211_sta *sta, u16 tids, 2784 int num_frames, 2785 enum ieee80211_frame_release_type reason, 2786 bool more_data) 2787 { 2788 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2789 2790 /* Called when we need to transmit (a) frame(s) from agg or dqa queue */ 2791 2792 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames, 2793 tids, more_data, true); 2794 } 2795 2796 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2797 enum sta_notify_cmd cmd, 2798 struct ieee80211_sta *sta) 2799 { 2800 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2801 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 2802 unsigned long txqs = 0, tids = 0; 2803 int tid; 2804 2805 /* 2806 * If we have TVQM then we get too high queue numbers - luckily 2807 * we really shouldn't get here with that because such hardware 2808 * should have firmware supporting buffer station offload. 2809 */ 2810 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) 2811 return; 2812 2813 spin_lock_bh(&mvmsta->lock); 2814 for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) { 2815 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; 2816 2817 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE) 2818 continue; 2819 2820 __set_bit(tid_data->txq_id, &txqs); 2821 2822 if (iwl_mvm_tid_queued(mvm, tid_data) == 0) 2823 continue; 2824 2825 __set_bit(tid, &tids); 2826 } 2827 2828 switch (cmd) { 2829 case STA_NOTIFY_SLEEP: 2830 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT) 2831 ieee80211_sta_set_buffered(sta, tid, true); 2832 2833 if (txqs) 2834 iwl_trans_freeze_txq_timer(mvm->trans, txqs, true); 2835 /* 2836 * The fw updates the STA to be asleep. Tx packets on the Tx 2837 * queues to this station will not be transmitted. The fw will 2838 * send a Tx response with TX_STATUS_FAIL_DEST_PS. 2839 */ 2840 break; 2841 case STA_NOTIFY_AWAKE: 2842 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA)) 2843 break; 2844 2845 if (txqs) 2846 iwl_trans_freeze_txq_timer(mvm->trans, txqs, false); 2847 iwl_mvm_sta_modify_ps_wake(mvm, sta); 2848 break; 2849 default: 2850 break; 2851 } 2852 spin_unlock_bh(&mvmsta->lock); 2853 } 2854 2855 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw, 2856 struct ieee80211_vif *vif, 2857 enum sta_notify_cmd cmd, 2858 struct ieee80211_sta *sta) 2859 { 2860 __iwl_mvm_mac_sta_notify(hw, cmd, sta); 2861 } 2862 2863 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) 2864 { 2865 struct iwl_rx_packet *pkt = rxb_addr(rxb); 2866 struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data; 2867 struct ieee80211_sta *sta; 2868 struct iwl_mvm_sta *mvmsta; 2869 bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE); 2870 2871 if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id))) 2872 return; 2873 2874 rcu_read_lock(); 2875 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]); 2876 if (WARN_ON(IS_ERR_OR_NULL(sta))) { 2877 rcu_read_unlock(); 2878 return; 2879 } 2880 2881 mvmsta = iwl_mvm_sta_from_mac80211(sta); 2882 2883 if (!mvmsta->vif || 2884 mvmsta->vif->type != NL80211_IFTYPE_AP) { 2885 rcu_read_unlock(); 2886 return; 2887 } 2888 2889 if (mvmsta->sleeping != sleeping) { 2890 mvmsta->sleeping = sleeping; 2891 __iwl_mvm_mac_sta_notify(mvm->hw, 2892 sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, 2893 sta); 2894 ieee80211_sta_ps_transition(sta, sleeping); 2895 } 2896 2897 if (sleeping) { 2898 switch (notif->type) { 2899 case IWL_MVM_PM_EVENT_AWAKE: 2900 case IWL_MVM_PM_EVENT_ASLEEP: 2901 break; 2902 case IWL_MVM_PM_EVENT_UAPSD: 2903 ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS); 2904 break; 2905 case IWL_MVM_PM_EVENT_PS_POLL: 2906 ieee80211_sta_pspoll(sta); 2907 break; 2908 default: 2909 break; 2910 } 2911 } 2912 2913 rcu_read_unlock(); 2914 } 2915 2916 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw, 2917 struct ieee80211_vif *vif, 2918 struct ieee80211_sta *sta) 2919 { 2920 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 2921 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 2922 2923 /* 2924 * This is called before mac80211 does RCU synchronisation, 2925 * so here we already invalidate our internal RCU-protected 2926 * station pointer. The rest of the code will thus no longer 2927 * be able to find the station this way, and we don't rely 2928 * on further RCU synchronisation after the sta_state() 2929 * callback deleted the station. 2930 */ 2931 mutex_lock(&mvm->mutex); 2932 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id])) 2933 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id], 2934 ERR_PTR(-ENOENT)); 2935 2936 mutex_unlock(&mvm->mutex); 2937 } 2938 2939 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 2940 const u8 *bssid) 2941 { 2942 int i; 2943 2944 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { 2945 struct iwl_mvm_tcm_mac *mdata; 2946 2947 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id]; 2948 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate); 2949 mdata->opened_rx_ba_sessions = false; 2950 } 2951 2952 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT)) 2953 return; 2954 2955 if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) { 2956 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2957 return; 2958 } 2959 2960 if (!vif->p2p && 2961 (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) { 2962 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2963 return; 2964 } 2965 2966 for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) { 2967 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) { 2968 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD; 2969 return; 2970 } 2971 } 2972 2973 vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD; 2974 } 2975 2976 static void 2977 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm, 2978 struct ieee80211_vif *vif, u8 *peer_addr, 2979 enum nl80211_tdls_operation action) 2980 { 2981 struct iwl_fw_dbg_trigger_tlv *trig; 2982 struct iwl_fw_dbg_trigger_tdls *tdls_trig; 2983 2984 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 2985 FW_DBG_TRIGGER_TDLS); 2986 if (!trig) 2987 return; 2988 2989 tdls_trig = (void *)trig->data; 2990 2991 if (!(tdls_trig->action_bitmap & BIT(action))) 2992 return; 2993 2994 if (tdls_trig->peer_mode && 2995 memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0) 2996 return; 2997 2998 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 2999 "TDLS event occurred, peer %pM, action %d", 3000 peer_addr, action); 3001 } 3002 3003 struct iwl_mvm_he_obss_narrow_bw_ru_data { 3004 bool tolerated; 3005 }; 3006 3007 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy, 3008 struct cfg80211_bss *bss, 3009 void *_data) 3010 { 3011 struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data; 3012 const struct element *elem; 3013 3014 elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, bss->ies->data, 3015 bss->ies->len); 3016 3017 if (!elem || elem->datalen < 10 || 3018 !(elem->data[10] & 3019 WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) { 3020 data->tolerated = false; 3021 } 3022 } 3023 3024 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw, 3025 struct ieee80211_vif *vif) 3026 { 3027 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3028 struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = { 3029 .tolerated = true, 3030 }; 3031 3032 if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) { 3033 mvmvif->he_ru_2mhz_block = false; 3034 return; 3035 } 3036 3037 cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef, 3038 iwl_mvm_check_he_obss_narrow_bw_ru_iter, 3039 &iter_data); 3040 3041 /* 3042 * If there is at least one AP on radar channel that cannot 3043 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU. 3044 */ 3045 mvmvif->he_ru_2mhz_block = !iter_data.tolerated; 3046 } 3047 3048 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw, 3049 struct ieee80211_vif *vif, 3050 struct ieee80211_sta *sta, 3051 enum ieee80211_sta_state old_state, 3052 enum ieee80211_sta_state new_state) 3053 { 3054 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3055 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3056 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 3057 int ret; 3058 3059 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n", 3060 sta->addr, old_state, new_state); 3061 3062 /* this would be a mac80211 bug ... but don't crash */ 3063 if (WARN_ON_ONCE(!mvmvif->phy_ctxt)) 3064 return -EINVAL; 3065 3066 /* 3067 * If we are in a STA removal flow and in DQA mode: 3068 * 3069 * This is after the sync_rcu part, so the queues have already been 3070 * flushed. No more TXs on their way in mac80211's path, and no more in 3071 * the queues. 3072 * Also, we won't be getting any new TX frames for this station. 3073 * What we might have are deferred TX frames that need to be taken care 3074 * of. 3075 * 3076 * Drop any still-queued deferred-frame before removing the STA, and 3077 * make sure the worker is no longer handling frames for this STA. 3078 */ 3079 if (old_state == IEEE80211_STA_NONE && 3080 new_state == IEEE80211_STA_NOTEXIST) { 3081 flush_work(&mvm->add_stream_wk); 3082 3083 /* 3084 * No need to make sure deferred TX indication is off since the 3085 * worker will already remove it if it was on 3086 */ 3087 } 3088 3089 mutex_lock(&mvm->mutex); 3090 /* track whether or not the station is associated */ 3091 mvm_sta->sta_state = new_state; 3092 3093 if (old_state == IEEE80211_STA_NOTEXIST && 3094 new_state == IEEE80211_STA_NONE) { 3095 /* 3096 * Firmware bug - it'll crash if the beacon interval is less 3097 * than 16. We can't avoid connecting at all, so refuse the 3098 * station state change, this will cause mac80211 to abandon 3099 * attempts to connect to this AP, and eventually wpa_s will 3100 * blacklist the AP... 3101 */ 3102 if (vif->type == NL80211_IFTYPE_STATION && 3103 vif->bss_conf.beacon_int < 16) { 3104 IWL_ERR(mvm, 3105 "AP %pM beacon interval is %d, refusing due to firmware bug!\n", 3106 sta->addr, vif->bss_conf.beacon_int); 3107 ret = -EINVAL; 3108 goto out_unlock; 3109 } 3110 3111 if (sta->tdls && 3112 (vif->p2p || 3113 iwl_mvm_tdls_sta_count(mvm, NULL) == 3114 IWL_MVM_TDLS_STA_COUNT || 3115 iwl_mvm_phy_ctx_count(mvm) > 1)) { 3116 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n"); 3117 ret = -EBUSY; 3118 goto out_unlock; 3119 } 3120 3121 ret = iwl_mvm_add_sta(mvm, vif, sta); 3122 if (sta->tdls && ret == 0) { 3123 iwl_mvm_recalc_tdls_state(mvm, vif, true); 3124 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3125 NL80211_TDLS_SETUP); 3126 } 3127 3128 sta->max_rc_amsdu_len = 1; 3129 } else if (old_state == IEEE80211_STA_NONE && 3130 new_state == IEEE80211_STA_AUTH) { 3131 /* 3132 * EBS may be disabled due to previous failures reported by FW. 3133 * Reset EBS status here assuming environment has been changed. 3134 */ 3135 mvm->last_ebs_successful = true; 3136 iwl_mvm_check_uapsd(mvm, vif, sta->addr); 3137 ret = 0; 3138 } else if (old_state == IEEE80211_STA_AUTH && 3139 new_state == IEEE80211_STA_ASSOC) { 3140 if (vif->type == NL80211_IFTYPE_AP) { 3141 vif->bss_conf.he_support = sta->he_cap.has_he; 3142 mvmvif->ap_assoc_sta_count++; 3143 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3144 if (vif->bss_conf.he_support && 3145 !iwlwifi_mod_params.disable_11ax) 3146 iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id); 3147 } else if (vif->type == NL80211_IFTYPE_STATION) { 3148 vif->bss_conf.he_support = sta->he_cap.has_he; 3149 3150 mvmvif->he_ru_2mhz_block = false; 3151 if (sta->he_cap.has_he) 3152 iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif); 3153 3154 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3155 } 3156 3157 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3158 false); 3159 ret = iwl_mvm_update_sta(mvm, vif, sta); 3160 } else if (old_state == IEEE80211_STA_ASSOC && 3161 new_state == IEEE80211_STA_AUTHORIZED) { 3162 ret = 0; 3163 3164 /* we don't support TDLS during DCM */ 3165 if (iwl_mvm_phy_ctx_count(mvm) > 1) 3166 iwl_mvm_teardown_tdls_peers(mvm); 3167 3168 if (sta->tdls) 3169 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3170 NL80211_TDLS_ENABLE_LINK); 3171 3172 /* enable beacon filtering */ 3173 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0)); 3174 3175 /* 3176 * Now that the station is authorized, i.e., keys were already 3177 * installed, need to indicate to the FW that 3178 * multicast data frames can be forwarded to the driver 3179 */ 3180 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3181 3182 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3183 true); 3184 } else if (old_state == IEEE80211_STA_AUTHORIZED && 3185 new_state == IEEE80211_STA_ASSOC) { 3186 /* Multicast data frames are no longer allowed */ 3187 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3188 3189 /* disable beacon filtering */ 3190 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 3191 WARN_ON(ret && 3192 !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3193 &mvm->status)); 3194 ret = 0; 3195 } else if (old_state == IEEE80211_STA_ASSOC && 3196 new_state == IEEE80211_STA_AUTH) { 3197 if (vif->type == NL80211_IFTYPE_AP) { 3198 mvmvif->ap_assoc_sta_count--; 3199 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3200 } 3201 ret = 0; 3202 } else if (old_state == IEEE80211_STA_AUTH && 3203 new_state == IEEE80211_STA_NONE) { 3204 ret = 0; 3205 } else if (old_state == IEEE80211_STA_NONE && 3206 new_state == IEEE80211_STA_NOTEXIST) { 3207 ret = iwl_mvm_rm_sta(mvm, vif, sta); 3208 if (sta->tdls) { 3209 iwl_mvm_recalc_tdls_state(mvm, vif, false); 3210 iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr, 3211 NL80211_TDLS_DISABLE_LINK); 3212 } 3213 3214 if (unlikely(ret && 3215 test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, 3216 &mvm->status))) 3217 ret = 0; 3218 } else { 3219 ret = -EIO; 3220 } 3221 out_unlock: 3222 mutex_unlock(&mvm->mutex); 3223 3224 if (sta->tdls && ret == 0) { 3225 if (old_state == IEEE80211_STA_NOTEXIST && 3226 new_state == IEEE80211_STA_NONE) 3227 ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3228 else if (old_state == IEEE80211_STA_NONE && 3229 new_state == IEEE80211_STA_NOTEXIST) 3230 ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID); 3231 } 3232 3233 return ret; 3234 } 3235 3236 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 3237 { 3238 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3239 3240 mvm->rts_threshold = value; 3241 3242 return 0; 3243 } 3244 3245 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw, 3246 struct ieee80211_vif *vif, 3247 struct ieee80211_sta *sta, u32 changed) 3248 { 3249 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3250 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3251 3252 if (changed & (IEEE80211_RC_BW_CHANGED | 3253 IEEE80211_RC_SUPP_RATES_CHANGED | 3254 IEEE80211_RC_NSS_CHANGED)) 3255 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band, 3256 true); 3257 3258 if (vif->type == NL80211_IFTYPE_STATION && 3259 changed & IEEE80211_RC_NSS_CHANGED) 3260 iwl_mvm_sf_update(mvm, vif, false); 3261 } 3262 3263 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw, 3264 struct ieee80211_vif *vif, u16 ac, 3265 const struct ieee80211_tx_queue_params *params) 3266 { 3267 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3269 3270 mvmvif->queue_params[ac] = *params; 3271 3272 /* 3273 * No need to update right away, we'll get BSS_CHANGED_QOS 3274 * The exception is P2P_DEVICE interface which needs immediate update. 3275 */ 3276 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { 3277 int ret; 3278 3279 mutex_lock(&mvm->mutex); 3280 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 3281 mutex_unlock(&mvm->mutex); 3282 return ret; 3283 } 3284 return 0; 3285 } 3286 3287 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw, 3288 struct ieee80211_vif *vif, 3289 u16 req_duration) 3290 { 3291 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3292 u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS; 3293 u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS; 3294 3295 if (req_duration > duration) 3296 duration = req_duration; 3297 3298 mutex_lock(&mvm->mutex); 3299 /* Try really hard to protect the session and hear a beacon 3300 * The new session protection command allows us to protect the 3301 * session for a much longer time since the firmware will internally 3302 * create two events: a 300TU one with a very high priority that 3303 * won't be fragmented which should be enough for 99% of the cases, 3304 * and another one (which we configure here to be 900TU long) which 3305 * will have a slightly lower priority, but more importantly, can be 3306 * fragmented so that it'll allow other activities to run. 3307 */ 3308 if (fw_has_capa(&mvm->fw->ucode_capa, 3309 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) 3310 iwl_mvm_schedule_session_protection(mvm, vif, 900, 3311 min_duration, false); 3312 else 3313 iwl_mvm_protect_session(mvm, vif, duration, 3314 min_duration, 500, false); 3315 mutex_unlock(&mvm->mutex); 3316 } 3317 3318 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw, 3319 struct ieee80211_vif *vif, 3320 struct cfg80211_sched_scan_request *req, 3321 struct ieee80211_scan_ies *ies) 3322 { 3323 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3324 3325 int ret; 3326 3327 mutex_lock(&mvm->mutex); 3328 3329 if (!vif->bss_conf.idle) { 3330 ret = -EBUSY; 3331 goto out; 3332 } 3333 3334 ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED); 3335 3336 out: 3337 mutex_unlock(&mvm->mutex); 3338 return ret; 3339 } 3340 3341 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, 3342 struct ieee80211_vif *vif) 3343 { 3344 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3345 int ret; 3346 3347 mutex_lock(&mvm->mutex); 3348 3349 /* Due to a race condition, it's possible that mac80211 asks 3350 * us to stop a sched_scan when it's already stopped. This 3351 * can happen, for instance, if we stopped the scan ourselves, 3352 * called ieee80211_sched_scan_stopped() and the userspace called 3353 * stop sched scan scan before ieee80211_sched_scan_stopped_work() 3354 * could run. To handle this, simply return if the scan is 3355 * not running. 3356 */ 3357 if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) { 3358 mutex_unlock(&mvm->mutex); 3359 return 0; 3360 } 3361 3362 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false); 3363 mutex_unlock(&mvm->mutex); 3364 iwl_mvm_wait_for_async_handlers(mvm); 3365 3366 return ret; 3367 } 3368 3369 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3370 enum set_key_cmd cmd, 3371 struct ieee80211_vif *vif, 3372 struct ieee80211_sta *sta, 3373 struct ieee80211_key_conf *key) 3374 { 3375 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3376 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3377 struct iwl_mvm_sta *mvmsta; 3378 struct iwl_mvm_key_pn *ptk_pn; 3379 int keyidx = key->keyidx; 3380 int ret, i; 3381 u8 key_offset; 3382 3383 switch (key->cipher) { 3384 case WLAN_CIPHER_SUITE_TKIP: 3385 if (!mvm->trans->trans_cfg->gen2) { 3386 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 3387 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3388 } else if (vif->type == NL80211_IFTYPE_STATION) { 3389 key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE; 3390 } else { 3391 IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n"); 3392 return -EOPNOTSUPP; 3393 } 3394 break; 3395 case WLAN_CIPHER_SUITE_CCMP: 3396 case WLAN_CIPHER_SUITE_GCMP: 3397 case WLAN_CIPHER_SUITE_GCMP_256: 3398 if (!iwl_mvm_has_new_tx_api(mvm)) 3399 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3400 break; 3401 case WLAN_CIPHER_SUITE_AES_CMAC: 3402 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3403 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3404 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE)); 3405 break; 3406 case WLAN_CIPHER_SUITE_WEP40: 3407 case WLAN_CIPHER_SUITE_WEP104: 3408 if (vif->type == NL80211_IFTYPE_STATION) 3409 break; 3410 if (iwl_mvm_has_new_tx_api(mvm)) 3411 return -EOPNOTSUPP; 3412 /* support HW crypto on TX */ 3413 return 0; 3414 default: 3415 /* currently FW supports only one optional cipher scheme */ 3416 if (hw->n_cipher_schemes && 3417 hw->cipher_schemes->cipher == key->cipher) 3418 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; 3419 else 3420 return -EOPNOTSUPP; 3421 } 3422 3423 switch (cmd) { 3424 case SET_KEY: 3425 if ((vif->type == NL80211_IFTYPE_ADHOC || 3426 vif->type == NL80211_IFTYPE_AP) && !sta) { 3427 /* 3428 * GTK on AP interface is a TX-only key, return 0; 3429 * on IBSS they're per-station and because we're lazy 3430 * we don't support them for RX, so do the same. 3431 * CMAC/GMAC in AP/IBSS modes must be done in software. 3432 */ 3433 if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC || 3434 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 || 3435 key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) 3436 ret = -EOPNOTSUPP; 3437 else 3438 ret = 0; 3439 3440 if (key->cipher != WLAN_CIPHER_SUITE_GCMP && 3441 key->cipher != WLAN_CIPHER_SUITE_GCMP_256 && 3442 !iwl_mvm_has_new_tx_api(mvm)) { 3443 key->hw_key_idx = STA_KEY_IDX_INVALID; 3444 break; 3445 } 3446 3447 if (!mvmvif->ap_ibss_active) { 3448 for (i = 0; 3449 i < ARRAY_SIZE(mvmvif->ap_early_keys); 3450 i++) { 3451 if (!mvmvif->ap_early_keys[i]) { 3452 mvmvif->ap_early_keys[i] = key; 3453 break; 3454 } 3455 } 3456 3457 if (i >= ARRAY_SIZE(mvmvif->ap_early_keys)) 3458 ret = -ENOSPC; 3459 3460 break; 3461 } 3462 } 3463 3464 /* During FW restart, in order to restore the state as it was, 3465 * don't try to reprogram keys we previously failed for. 3466 */ 3467 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3468 key->hw_key_idx == STA_KEY_IDX_INVALID) { 3469 IWL_DEBUG_MAC80211(mvm, 3470 "skip invalid idx key programming during restart\n"); 3471 ret = 0; 3472 break; 3473 } 3474 3475 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && 3476 sta && iwl_mvm_has_new_rx_api(mvm) && 3477 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3478 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3479 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3480 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3481 struct ieee80211_key_seq seq; 3482 int tid, q; 3483 3484 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3485 WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx])); 3486 ptk_pn = kzalloc(struct_size(ptk_pn, q, 3487 mvm->trans->num_rx_queues), 3488 GFP_KERNEL); 3489 if (!ptk_pn) { 3490 ret = -ENOMEM; 3491 break; 3492 } 3493 3494 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { 3495 ieee80211_get_key_rx_seq(key, tid, &seq); 3496 for (q = 0; q < mvm->trans->num_rx_queues; q++) 3497 memcpy(ptk_pn->q[q].pn[tid], 3498 seq.ccmp.pn, 3499 IEEE80211_CCMP_PN_LEN); 3500 } 3501 3502 rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn); 3503 } 3504 3505 /* in HW restart reuse the index, otherwise request a new one */ 3506 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) 3507 key_offset = key->hw_key_idx; 3508 else 3509 key_offset = STA_KEY_IDX_INVALID; 3510 3511 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n"); 3512 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset); 3513 if (ret) { 3514 IWL_WARN(mvm, "set key failed\n"); 3515 key->hw_key_idx = STA_KEY_IDX_INVALID; 3516 /* 3517 * can't add key for RX, but we don't need it 3518 * in the device for TX so still return 0, 3519 * unless we have new TX API where we cannot 3520 * put key material into the TX_CMD 3521 */ 3522 if (iwl_mvm_has_new_tx_api(mvm)) 3523 ret = -EOPNOTSUPP; 3524 else 3525 ret = 0; 3526 } 3527 3528 break; 3529 case DISABLE_KEY: 3530 ret = -ENOENT; 3531 for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) { 3532 if (mvmvif->ap_early_keys[i] == key) { 3533 mvmvif->ap_early_keys[i] = NULL; 3534 ret = 0; 3535 } 3536 } 3537 3538 /* found in pending list - don't do anything else */ 3539 if (ret == 0) 3540 break; 3541 3542 if (key->hw_key_idx == STA_KEY_IDX_INVALID) { 3543 ret = 0; 3544 break; 3545 } 3546 3547 if (sta && iwl_mvm_has_new_rx_api(mvm) && 3548 key->flags & IEEE80211_KEY_FLAG_PAIRWISE && 3549 (key->cipher == WLAN_CIPHER_SUITE_CCMP || 3550 key->cipher == WLAN_CIPHER_SUITE_GCMP || 3551 key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) { 3552 mvmsta = iwl_mvm_sta_from_mac80211(sta); 3553 ptk_pn = rcu_dereference_protected( 3554 mvmsta->ptk_pn[keyidx], 3555 lockdep_is_held(&mvm->mutex)); 3556 RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL); 3557 if (ptk_pn) 3558 kfree_rcu(ptk_pn, rcu_head); 3559 } 3560 3561 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n"); 3562 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key); 3563 break; 3564 default: 3565 ret = -EINVAL; 3566 } 3567 3568 return ret; 3569 } 3570 3571 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, 3572 enum set_key_cmd cmd, 3573 struct ieee80211_vif *vif, 3574 struct ieee80211_sta *sta, 3575 struct ieee80211_key_conf *key) 3576 { 3577 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3578 int ret; 3579 3580 mutex_lock(&mvm->mutex); 3581 ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); 3582 mutex_unlock(&mvm->mutex); 3583 3584 return ret; 3585 } 3586 3587 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw, 3588 struct ieee80211_vif *vif, 3589 struct ieee80211_key_conf *keyconf, 3590 struct ieee80211_sta *sta, 3591 u32 iv32, u16 *phase1key) 3592 { 3593 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3594 3595 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID) 3596 return; 3597 3598 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key); 3599 } 3600 3601 3602 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait, 3603 struct iwl_rx_packet *pkt, void *data) 3604 { 3605 struct iwl_mvm *mvm = 3606 container_of(notif_wait, struct iwl_mvm, notif_wait); 3607 struct iwl_hs20_roc_res *resp; 3608 int resp_len = iwl_rx_packet_payload_len(pkt); 3609 struct iwl_mvm_time_event_data *te_data = data; 3610 3611 if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD)) 3612 return true; 3613 3614 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { 3615 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n"); 3616 return true; 3617 } 3618 3619 resp = (void *)pkt->data; 3620 3621 IWL_DEBUG_TE(mvm, 3622 "Aux ROC: Received response from ucode: status=%d uid=%d\n", 3623 resp->status, resp->event_unique_id); 3624 3625 te_data->uid = le32_to_cpu(resp->event_unique_id); 3626 IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n", 3627 te_data->uid); 3628 3629 spin_lock_bh(&mvm->time_event_lock); 3630 list_add_tail(&te_data->list, &mvm->aux_roc_te_list); 3631 spin_unlock_bh(&mvm->time_event_lock); 3632 3633 return true; 3634 } 3635 3636 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100) 3637 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200) 3638 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600) 3639 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20) 3640 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10) 3641 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm, 3642 struct ieee80211_channel *channel, 3643 struct ieee80211_vif *vif, 3644 int duration) 3645 { 3646 int res; 3647 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3648 struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data; 3649 static const u16 time_event_response[] = { HOT_SPOT_CMD }; 3650 struct iwl_notification_wait wait_time_event; 3651 u32 dtim_interval = vif->bss_conf.dtim_period * 3652 vif->bss_conf.beacon_int; 3653 u32 req_dur, delay; 3654 struct iwl_hs20_roc_req aux_roc_req = { 3655 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 3656 .id_and_color = 3657 cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)), 3658 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id), 3659 }; 3660 struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm, 3661 &aux_roc_req.channel_info); 3662 u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm); 3663 3664 /* Set the channel info data */ 3665 iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value, 3666 iwl_mvm_phy_band_from_nl80211(channel->band), 3667 PHY_VHT_CHANNEL_MODE20, 3668 0); 3669 3670 /* Set the time and duration */ 3671 tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm)); 3672 3673 delay = AUX_ROC_MIN_DELAY; 3674 req_dur = MSEC_TO_TU(duration); 3675 3676 /* 3677 * If we are associated we want the delay time to be at least one 3678 * dtim interval so that the FW can wait until after the DTIM and 3679 * then start the time event, this will potentially allow us to 3680 * remain off-channel for the max duration. 3681 * Since we want to use almost a whole dtim interval we would also 3682 * like the delay to be for 2-3 dtim intervals, in case there are 3683 * other time events with higher priority. 3684 */ 3685 if (vif->bss_conf.assoc) { 3686 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY); 3687 /* We cannot remain off-channel longer than the DTIM interval */ 3688 if (dtim_interval <= req_dur) { 3689 req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER; 3690 if (req_dur <= AUX_ROC_MIN_DURATION) 3691 req_dur = dtim_interval - 3692 AUX_ROC_MIN_SAFETY_BUFFER; 3693 } 3694 } 3695 3696 tail->duration = cpu_to_le32(req_dur); 3697 tail->apply_time_max_delay = cpu_to_le32(delay); 3698 3699 IWL_DEBUG_TE(mvm, 3700 "ROC: Requesting to remain on channel %u for %ums (requested = %ums, max_delay = %ums, dtim_interval = %ums)\n", 3701 channel->hw_value, req_dur, duration, delay, 3702 dtim_interval); 3703 /* Set the node address */ 3704 memcpy(tail->node_addr, vif->addr, ETH_ALEN); 3705 3706 lockdep_assert_held(&mvm->mutex); 3707 3708 spin_lock_bh(&mvm->time_event_lock); 3709 3710 if (WARN_ON(te_data->id == HOT_SPOT_CMD)) { 3711 spin_unlock_bh(&mvm->time_event_lock); 3712 return -EIO; 3713 } 3714 3715 te_data->vif = vif; 3716 te_data->duration = duration; 3717 te_data->id = HOT_SPOT_CMD; 3718 3719 spin_unlock_bh(&mvm->time_event_lock); 3720 3721 /* 3722 * Use a notification wait, which really just processes the 3723 * command response and doesn't wait for anything, in order 3724 * to be able to process the response and get the UID inside 3725 * the RX path. Using CMD_WANT_SKB doesn't work because it 3726 * stores the buffer and then wakes up this thread, by which 3727 * time another notification (that the time event started) 3728 * might already be processed unsuccessfully. 3729 */ 3730 iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event, 3731 time_event_response, 3732 ARRAY_SIZE(time_event_response), 3733 iwl_mvm_rx_aux_roc, te_data); 3734 3735 res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len, 3736 &aux_roc_req); 3737 3738 if (res) { 3739 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res); 3740 iwl_remove_notification(&mvm->notif_wait, &wait_time_event); 3741 goto out_clear_te; 3742 } 3743 3744 /* No need to wait for anything, so just pass 1 (0 isn't valid) */ 3745 res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1); 3746 /* should never fail */ 3747 WARN_ON_ONCE(res); 3748 3749 if (res) { 3750 out_clear_te: 3751 spin_lock_bh(&mvm->time_event_lock); 3752 iwl_mvm_te_clear_data(mvm, te_data); 3753 spin_unlock_bh(&mvm->time_event_lock); 3754 } 3755 3756 return res; 3757 } 3758 3759 static int iwl_mvm_roc(struct ieee80211_hw *hw, 3760 struct ieee80211_vif *vif, 3761 struct ieee80211_channel *channel, 3762 int duration, 3763 enum ieee80211_roc_type type) 3764 { 3765 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3766 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 3767 struct cfg80211_chan_def chandef; 3768 struct iwl_mvm_phy_ctxt *phy_ctxt; 3769 int ret, i; 3770 3771 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value, 3772 duration, type); 3773 3774 /* 3775 * Flush the done work, just in case it's still pending, so that 3776 * the work it does can complete and we can accept new frames. 3777 */ 3778 flush_work(&mvm->roc_done_wk); 3779 3780 mutex_lock(&mvm->mutex); 3781 3782 switch (vif->type) { 3783 case NL80211_IFTYPE_STATION: 3784 if (fw_has_capa(&mvm->fw->ucode_capa, 3785 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) { 3786 /* Use aux roc framework (HS20) */ 3787 ret = iwl_mvm_send_aux_roc_cmd(mvm, channel, 3788 vif, duration); 3789 goto out_unlock; 3790 } 3791 IWL_ERR(mvm, "hotspot not supported\n"); 3792 ret = -EINVAL; 3793 goto out_unlock; 3794 case NL80211_IFTYPE_P2P_DEVICE: 3795 /* handle below */ 3796 break; 3797 default: 3798 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type); 3799 ret = -EINVAL; 3800 goto out_unlock; 3801 } 3802 3803 for (i = 0; i < NUM_PHY_CTX; i++) { 3804 phy_ctxt = &mvm->phy_ctxts[i]; 3805 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt) 3806 continue; 3807 3808 if (phy_ctxt->ref && channel == phy_ctxt->channel) { 3809 /* 3810 * Unbind the P2P_DEVICE from the current PHY context, 3811 * and if the PHY context is not used remove it. 3812 */ 3813 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3814 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3815 goto out_unlock; 3816 3817 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3818 3819 /* Bind the P2P_DEVICE to the current PHY Context */ 3820 mvmvif->phy_ctxt = phy_ctxt; 3821 3822 ret = iwl_mvm_binding_add_vif(mvm, vif); 3823 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3824 goto out_unlock; 3825 3826 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3827 goto schedule_time_event; 3828 } 3829 } 3830 3831 /* Need to update the PHY context only if the ROC channel changed */ 3832 if (channel == mvmvif->phy_ctxt->channel) 3833 goto schedule_time_event; 3834 3835 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT); 3836 3837 /* 3838 * Change the PHY context configuration as it is currently referenced 3839 * only by the P2P Device MAC 3840 */ 3841 if (mvmvif->phy_ctxt->ref == 1) { 3842 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt, 3843 &chandef, 1, 1); 3844 if (ret) 3845 goto out_unlock; 3846 } else { 3847 /* 3848 * The PHY context is shared with other MACs. Need to remove the 3849 * P2P Device from the binding, allocate an new PHY context and 3850 * create a new binding 3851 */ 3852 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3853 if (!phy_ctxt) { 3854 ret = -ENOSPC; 3855 goto out_unlock; 3856 } 3857 3858 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef, 3859 1, 1); 3860 if (ret) { 3861 IWL_ERR(mvm, "Failed to change PHY context\n"); 3862 goto out_unlock; 3863 } 3864 3865 /* Unbind the P2P_DEVICE from the current PHY context */ 3866 ret = iwl_mvm_binding_remove_vif(mvm, vif); 3867 if (WARN(ret, "Failed unbinding P2P_DEVICE\n")) 3868 goto out_unlock; 3869 3870 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt); 3871 3872 /* Bind the P2P_DEVICE to the new allocated PHY context */ 3873 mvmvif->phy_ctxt = phy_ctxt; 3874 3875 ret = iwl_mvm_binding_add_vif(mvm, vif); 3876 if (WARN(ret, "Failed binding P2P_DEVICE\n")) 3877 goto out_unlock; 3878 3879 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt); 3880 } 3881 3882 schedule_time_event: 3883 /* Schedule the time events */ 3884 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type); 3885 3886 out_unlock: 3887 mutex_unlock(&mvm->mutex); 3888 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3889 return ret; 3890 } 3891 3892 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw, 3893 struct ieee80211_vif *vif) 3894 { 3895 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3896 3897 IWL_DEBUG_MAC80211(mvm, "enter\n"); 3898 3899 mutex_lock(&mvm->mutex); 3900 iwl_mvm_stop_roc(mvm, vif); 3901 mutex_unlock(&mvm->mutex); 3902 3903 IWL_DEBUG_MAC80211(mvm, "leave\n"); 3904 return 0; 3905 } 3906 3907 struct iwl_mvm_ftm_responder_iter_data { 3908 bool responder; 3909 struct ieee80211_chanctx_conf *ctx; 3910 }; 3911 3912 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac, 3913 struct ieee80211_vif *vif) 3914 { 3915 struct iwl_mvm_ftm_responder_iter_data *data = _data; 3916 3917 if (rcu_access_pointer(vif->chanctx_conf) == data->ctx && 3918 vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params) 3919 data->responder = true; 3920 } 3921 3922 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm, 3923 struct ieee80211_chanctx_conf *ctx) 3924 { 3925 struct iwl_mvm_ftm_responder_iter_data data = { 3926 .responder = false, 3927 .ctx = ctx, 3928 }; 3929 3930 ieee80211_iterate_active_interfaces_atomic(mvm->hw, 3931 IEEE80211_IFACE_ITER_NORMAL, 3932 iwl_mvm_ftm_responder_chanctx_iter, 3933 &data); 3934 return data.responder; 3935 } 3936 3937 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm, 3938 struct ieee80211_chanctx_conf *ctx) 3939 { 3940 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3941 struct iwl_mvm_phy_ctxt *phy_ctxt; 3942 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 3943 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 3944 int ret; 3945 3946 lockdep_assert_held(&mvm->mutex); 3947 3948 IWL_DEBUG_MAC80211(mvm, "Add channel context\n"); 3949 3950 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm); 3951 if (!phy_ctxt) { 3952 ret = -ENOSPC; 3953 goto out; 3954 } 3955 3956 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 3957 ctx->rx_chains_static, 3958 ctx->rx_chains_dynamic); 3959 if (ret) { 3960 IWL_ERR(mvm, "Failed to add PHY context\n"); 3961 goto out; 3962 } 3963 3964 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt); 3965 *phy_ctxt_id = phy_ctxt->id; 3966 out: 3967 return ret; 3968 } 3969 3970 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw, 3971 struct ieee80211_chanctx_conf *ctx) 3972 { 3973 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3974 int ret; 3975 3976 mutex_lock(&mvm->mutex); 3977 ret = __iwl_mvm_add_chanctx(mvm, ctx); 3978 mutex_unlock(&mvm->mutex); 3979 3980 return ret; 3981 } 3982 3983 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm, 3984 struct ieee80211_chanctx_conf *ctx) 3985 { 3986 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 3987 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 3988 3989 lockdep_assert_held(&mvm->mutex); 3990 3991 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt); 3992 } 3993 3994 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw, 3995 struct ieee80211_chanctx_conf *ctx) 3996 { 3997 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 3998 3999 mutex_lock(&mvm->mutex); 4000 __iwl_mvm_remove_chanctx(mvm, ctx); 4001 mutex_unlock(&mvm->mutex); 4002 } 4003 4004 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw, 4005 struct ieee80211_chanctx_conf *ctx, 4006 u32 changed) 4007 { 4008 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4009 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4010 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4011 bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx); 4012 struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def; 4013 4014 if (WARN_ONCE((phy_ctxt->ref > 1) && 4015 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH | 4016 IEEE80211_CHANCTX_CHANGE_RX_CHAINS | 4017 IEEE80211_CHANCTX_CHANGE_RADAR | 4018 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)), 4019 "Cannot change PHY. Ref=%d, changed=0x%X\n", 4020 phy_ctxt->ref, changed)) 4021 return; 4022 4023 mutex_lock(&mvm->mutex); 4024 4025 /* we are only changing the min_width, may be a noop */ 4026 if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) { 4027 if (phy_ctxt->width == def->width) 4028 goto out_unlock; 4029 4030 /* we are just toggling between 20_NOHT and 20 */ 4031 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 && 4032 def->width <= NL80211_CHAN_WIDTH_20) 4033 goto out_unlock; 4034 } 4035 4036 iwl_mvm_bt_coex_vif_change(mvm); 4037 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def, 4038 ctx->rx_chains_static, 4039 ctx->rx_chains_dynamic); 4040 4041 out_unlock: 4042 mutex_unlock(&mvm->mutex); 4043 } 4044 4045 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm, 4046 struct ieee80211_vif *vif, 4047 struct ieee80211_chanctx_conf *ctx, 4048 bool switching_chanctx) 4049 { 4050 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv; 4051 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id]; 4052 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4053 int ret; 4054 4055 lockdep_assert_held(&mvm->mutex); 4056 4057 mvmvif->phy_ctxt = phy_ctxt; 4058 4059 switch (vif->type) { 4060 case NL80211_IFTYPE_AP: 4061 /* only needed if we're switching chanctx (i.e. during CSA) */ 4062 if (switching_chanctx) { 4063 mvmvif->ap_ibss_active = true; 4064 break; 4065 } 4066 /* fall through */ 4067 case NL80211_IFTYPE_ADHOC: 4068 /* 4069 * The AP binding flow is handled as part of the start_ap flow 4070 * (in bss_info_changed), similarly for IBSS. 4071 */ 4072 ret = 0; 4073 goto out; 4074 case NL80211_IFTYPE_STATION: 4075 mvmvif->csa_bcn_pending = false; 4076 break; 4077 case NL80211_IFTYPE_MONITOR: 4078 /* always disable PS when a monitor interface is active */ 4079 mvmvif->ps_disabled = true; 4080 break; 4081 default: 4082 ret = -EINVAL; 4083 goto out; 4084 } 4085 4086 ret = iwl_mvm_binding_add_vif(mvm, vif); 4087 if (ret) 4088 goto out; 4089 4090 /* 4091 * Power state must be updated before quotas, 4092 * otherwise fw will complain. 4093 */ 4094 iwl_mvm_power_update_mac(mvm); 4095 4096 /* Setting the quota at this stage is only required for monitor 4097 * interfaces. For the other types, the bss_info changed flow 4098 * will handle quota settings. 4099 */ 4100 if (vif->type == NL80211_IFTYPE_MONITOR) { 4101 mvmvif->monitor_active = true; 4102 ret = iwl_mvm_update_quotas(mvm, false, NULL); 4103 if (ret) 4104 goto out_remove_binding; 4105 4106 ret = iwl_mvm_add_snif_sta(mvm, vif); 4107 if (ret) 4108 goto out_remove_binding; 4109 4110 } 4111 4112 /* Handle binding during CSA */ 4113 if (vif->type == NL80211_IFTYPE_AP) { 4114 iwl_mvm_update_quotas(mvm, false, NULL); 4115 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); 4116 } 4117 4118 if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) { 4119 mvmvif->csa_bcn_pending = true; 4120 4121 if (!fw_has_capa(&mvm->fw->ucode_capa, 4122 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4123 u32 duration = 3 * vif->bss_conf.beacon_int; 4124 4125 /* Protect the session to make sure we hear the first 4126 * beacon on the new channel. 4127 */ 4128 iwl_mvm_protect_session(mvm, vif, duration, duration, 4129 vif->bss_conf.beacon_int / 2, 4130 true); 4131 } 4132 4133 iwl_mvm_update_quotas(mvm, false, NULL); 4134 } 4135 4136 goto out; 4137 4138 out_remove_binding: 4139 iwl_mvm_binding_remove_vif(mvm, vif); 4140 iwl_mvm_power_update_mac(mvm); 4141 out: 4142 if (ret) 4143 mvmvif->phy_ctxt = NULL; 4144 return ret; 4145 } 4146 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw, 4147 struct ieee80211_vif *vif, 4148 struct ieee80211_chanctx_conf *ctx) 4149 { 4150 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4151 int ret; 4152 4153 mutex_lock(&mvm->mutex); 4154 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false); 4155 mutex_unlock(&mvm->mutex); 4156 4157 return ret; 4158 } 4159 4160 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm, 4161 struct ieee80211_vif *vif, 4162 struct ieee80211_chanctx_conf *ctx, 4163 bool switching_chanctx) 4164 { 4165 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4166 struct ieee80211_vif *disabled_vif = NULL; 4167 4168 lockdep_assert_held(&mvm->mutex); 4169 4170 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data); 4171 4172 switch (vif->type) { 4173 case NL80211_IFTYPE_ADHOC: 4174 goto out; 4175 case NL80211_IFTYPE_MONITOR: 4176 mvmvif->monitor_active = false; 4177 mvmvif->ps_disabled = false; 4178 iwl_mvm_rm_snif_sta(mvm, vif); 4179 break; 4180 case NL80211_IFTYPE_AP: 4181 /* This part is triggered only during CSA */ 4182 if (!switching_chanctx || !mvmvif->ap_ibss_active) 4183 goto out; 4184 4185 mvmvif->csa_countdown = false; 4186 4187 /* Set CS bit on all the stations */ 4188 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true); 4189 4190 /* Save blocked iface, the timeout is set on the next beacon */ 4191 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif); 4192 4193 mvmvif->ap_ibss_active = false; 4194 break; 4195 case NL80211_IFTYPE_STATION: 4196 if (!switching_chanctx) 4197 break; 4198 4199 disabled_vif = vif; 4200 4201 if (!fw_has_capa(&mvm->fw->ucode_capa, 4202 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) 4203 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL); 4204 break; 4205 default: 4206 break; 4207 } 4208 4209 iwl_mvm_update_quotas(mvm, false, disabled_vif); 4210 iwl_mvm_binding_remove_vif(mvm, vif); 4211 4212 out: 4213 mvmvif->phy_ctxt = NULL; 4214 iwl_mvm_power_update_mac(mvm); 4215 } 4216 4217 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw, 4218 struct ieee80211_vif *vif, 4219 struct ieee80211_chanctx_conf *ctx) 4220 { 4221 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4222 4223 mutex_lock(&mvm->mutex); 4224 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false); 4225 mutex_unlock(&mvm->mutex); 4226 } 4227 4228 static int 4229 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm, 4230 struct ieee80211_vif_chanctx_switch *vifs) 4231 { 4232 int ret; 4233 4234 mutex_lock(&mvm->mutex); 4235 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4236 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx); 4237 4238 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx); 4239 if (ret) { 4240 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n"); 4241 goto out_reassign; 4242 } 4243 4244 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4245 true); 4246 if (ret) { 4247 IWL_ERR(mvm, 4248 "failed to assign new_ctx during channel switch\n"); 4249 goto out_remove; 4250 } 4251 4252 /* we don't support TDLS during DCM - can be caused by channel switch */ 4253 if (iwl_mvm_phy_ctx_count(mvm) > 1) 4254 iwl_mvm_teardown_tdls_peers(mvm); 4255 4256 goto out; 4257 4258 out_remove: 4259 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx); 4260 4261 out_reassign: 4262 if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) { 4263 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n"); 4264 goto out_restart; 4265 } 4266 4267 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4268 true)) { 4269 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4270 goto out_restart; 4271 } 4272 4273 goto out; 4274 4275 out_restart: 4276 /* things keep failing, better restart the hw */ 4277 iwl_mvm_nic_restart(mvm, false); 4278 4279 out: 4280 mutex_unlock(&mvm->mutex); 4281 4282 return ret; 4283 } 4284 4285 static int 4286 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm, 4287 struct ieee80211_vif_chanctx_switch *vifs) 4288 { 4289 int ret; 4290 4291 mutex_lock(&mvm->mutex); 4292 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true); 4293 4294 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx, 4295 true); 4296 if (ret) { 4297 IWL_ERR(mvm, 4298 "failed to assign new_ctx during channel switch\n"); 4299 goto out_reassign; 4300 } 4301 4302 goto out; 4303 4304 out_reassign: 4305 if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, 4306 true)) { 4307 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n"); 4308 goto out_restart; 4309 } 4310 4311 goto out; 4312 4313 out_restart: 4314 /* things keep failing, better restart the hw */ 4315 iwl_mvm_nic_restart(mvm, false); 4316 4317 out: 4318 mutex_unlock(&mvm->mutex); 4319 4320 return ret; 4321 } 4322 4323 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw, 4324 struct ieee80211_vif_chanctx_switch *vifs, 4325 int n_vifs, 4326 enum ieee80211_chanctx_switch_mode mode) 4327 { 4328 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4329 int ret; 4330 4331 /* we only support a single-vif right now */ 4332 if (n_vifs > 1) 4333 return -EOPNOTSUPP; 4334 4335 switch (mode) { 4336 case CHANCTX_SWMODE_SWAP_CONTEXTS: 4337 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs); 4338 break; 4339 case CHANCTX_SWMODE_REASSIGN_VIF: 4340 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs); 4341 break; 4342 default: 4343 ret = -EOPNOTSUPP; 4344 break; 4345 } 4346 4347 return ret; 4348 } 4349 4350 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw) 4351 { 4352 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4353 4354 return mvm->ibss_manager; 4355 } 4356 4357 static int iwl_mvm_set_tim(struct ieee80211_hw *hw, 4358 struct ieee80211_sta *sta, 4359 bool set) 4360 { 4361 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4362 struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta); 4363 4364 if (!mvm_sta || !mvm_sta->vif) { 4365 IWL_ERR(mvm, "Station is not associated to a vif\n"); 4366 return -EINVAL; 4367 } 4368 4369 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif); 4370 } 4371 4372 #ifdef CONFIG_NL80211_TESTMODE 4373 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = { 4374 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 }, 4375 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 }, 4376 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 }, 4377 }; 4378 4379 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm, 4380 struct ieee80211_vif *vif, 4381 void *data, int len) 4382 { 4383 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1]; 4384 int err; 4385 u32 noa_duration; 4386 4387 err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len, 4388 iwl_mvm_tm_policy, NULL); 4389 if (err) 4390 return err; 4391 4392 if (!tb[IWL_MVM_TM_ATTR_CMD]) 4393 return -EINVAL; 4394 4395 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) { 4396 case IWL_MVM_TM_CMD_SET_NOA: 4397 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p || 4398 !vif->bss_conf.enable_beacon || 4399 !tb[IWL_MVM_TM_ATTR_NOA_DURATION]) 4400 return -EINVAL; 4401 4402 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]); 4403 if (noa_duration >= vif->bss_conf.beacon_int) 4404 return -EINVAL; 4405 4406 mvm->noa_duration = noa_duration; 4407 mvm->noa_vif = vif; 4408 4409 return iwl_mvm_update_quotas(mvm, true, NULL); 4410 case IWL_MVM_TM_CMD_SET_BEACON_FILTER: 4411 /* must be associated client vif - ignore authorized */ 4412 if (!vif || vif->type != NL80211_IFTYPE_STATION || 4413 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period || 4414 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]) 4415 return -EINVAL; 4416 4417 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])) 4418 return iwl_mvm_enable_beacon_filter(mvm, vif, 0); 4419 return iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4420 } 4421 4422 return -EOPNOTSUPP; 4423 } 4424 4425 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw, 4426 struct ieee80211_vif *vif, 4427 void *data, int len) 4428 { 4429 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4430 int err; 4431 4432 mutex_lock(&mvm->mutex); 4433 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len); 4434 mutex_unlock(&mvm->mutex); 4435 4436 return err; 4437 } 4438 #endif 4439 4440 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw, 4441 struct ieee80211_vif *vif, 4442 struct ieee80211_channel_switch *chsw) 4443 { 4444 /* By implementing this operation, we prevent mac80211 from 4445 * starting its own channel switch timer, so that we can call 4446 * ieee80211_chswitch_done() ourselves at the right time 4447 * (which is when the absence time event starts). 4448 */ 4449 4450 IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw), 4451 "dummy channel switch op\n"); 4452 } 4453 4454 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 4455 struct ieee80211_vif *vif, 4456 struct ieee80211_channel_switch *chsw) 4457 { 4458 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4459 struct iwl_chan_switch_te_cmd cmd = { 4460 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4461 mvmvif->color)), 4462 .action = cpu_to_le32(FW_CTXT_ACTION_ADD), 4463 .tsf = cpu_to_le32(chsw->timestamp), 4464 .cs_count = chsw->count, 4465 .cs_mode = chsw->block_tx, 4466 }; 4467 4468 lockdep_assert_held(&mvm->mutex); 4469 4470 if (chsw->delay) 4471 cmd.cs_delayed_bcn_count = 4472 DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int); 4473 4474 return iwl_mvm_send_cmd_pdu(mvm, 4475 WIDE_ID(MAC_CONF_GROUP, 4476 CHANNEL_SWITCH_TIME_EVENT_CMD), 4477 0, sizeof(cmd), &cmd); 4478 } 4479 4480 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, 4481 struct ieee80211_vif *vif, 4482 struct ieee80211_channel_switch *chsw) 4483 { 4484 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4485 u32 apply_time; 4486 4487 /* Schedule the time event to a bit before beacon 1, 4488 * to make sure we're in the new channel when the 4489 * GO/AP arrives. In case count <= 1 immediately schedule the 4490 * TE (this might result with some packet loss or connection 4491 * loss). 4492 */ 4493 if (chsw->count <= 1) 4494 apply_time = 0; 4495 else 4496 apply_time = chsw->device_timestamp + 4497 ((vif->bss_conf.beacon_int * (chsw->count - 1) - 4498 IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); 4499 4500 if (chsw->block_tx) 4501 iwl_mvm_csa_client_absent(mvm, vif); 4502 4503 if (mvmvif->bf_data.bf_enabled) { 4504 int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); 4505 4506 if (ret) 4507 return ret; 4508 } 4509 4510 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, 4511 apply_time); 4512 4513 return 0; 4514 } 4515 4516 #define IWL_MAX_CSA_BLOCK_TX 1500 4517 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, 4518 struct ieee80211_vif *vif, 4519 struct ieee80211_channel_switch *chsw) 4520 { 4521 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4522 struct ieee80211_vif *csa_vif; 4523 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4524 int ret; 4525 4526 mutex_lock(&mvm->mutex); 4527 4528 mvmvif->csa_failed = false; 4529 4530 IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n", 4531 chsw->chandef.center_freq1); 4532 4533 iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt, 4534 ieee80211_vif_to_wdev(vif), 4535 FW_DBG_TRIGGER_CHANNEL_SWITCH); 4536 4537 switch (vif->type) { 4538 case NL80211_IFTYPE_AP: 4539 csa_vif = 4540 rcu_dereference_protected(mvm->csa_vif, 4541 lockdep_is_held(&mvm->mutex)); 4542 if (WARN_ONCE(csa_vif && csa_vif->csa_active, 4543 "Another CSA is already in progress")) { 4544 ret = -EBUSY; 4545 goto out_unlock; 4546 } 4547 4548 /* we still didn't unblock tx. prevent new CS meanwhile */ 4549 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif, 4550 lockdep_is_held(&mvm->mutex))) { 4551 ret = -EBUSY; 4552 goto out_unlock; 4553 } 4554 4555 rcu_assign_pointer(mvm->csa_vif, vif); 4556 4557 if (WARN_ONCE(mvmvif->csa_countdown, 4558 "Previous CSA countdown didn't complete")) { 4559 ret = -EBUSY; 4560 goto out_unlock; 4561 } 4562 4563 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq; 4564 4565 break; 4566 case NL80211_IFTYPE_STATION: 4567 if (chsw->block_tx) { 4568 /* 4569 * In case of undetermined / long time with immediate 4570 * quiet monitor status to gracefully disconnect 4571 */ 4572 if (!chsw->count || 4573 chsw->count * vif->bss_conf.beacon_int > 4574 IWL_MAX_CSA_BLOCK_TX) 4575 schedule_delayed_work(&mvmvif->csa_work, 4576 msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); 4577 } 4578 4579 if (!fw_has_capa(&mvm->fw->ucode_capa, 4580 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { 4581 ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); 4582 if (ret) 4583 goto out_unlock; 4584 } else { 4585 iwl_mvm_schedule_client_csa(mvm, vif, chsw); 4586 } 4587 4588 mvmvif->csa_count = chsw->count; 4589 mvmvif->csa_misbehave = false; 4590 break; 4591 default: 4592 break; 4593 } 4594 4595 mvmvif->ps_disabled = true; 4596 4597 ret = iwl_mvm_power_update_ps(mvm); 4598 if (ret) 4599 goto out_unlock; 4600 4601 /* we won't be on this channel any longer */ 4602 iwl_mvm_teardown_tdls_peers(mvm); 4603 4604 out_unlock: 4605 mutex_unlock(&mvm->mutex); 4606 4607 return ret; 4608 } 4609 4610 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw, 4611 struct ieee80211_vif *vif, 4612 struct ieee80211_channel_switch *chsw) 4613 { 4614 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4615 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4616 struct iwl_chan_switch_te_cmd cmd = { 4617 .mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, 4618 mvmvif->color)), 4619 .action = cpu_to_le32(FW_CTXT_ACTION_MODIFY), 4620 .tsf = cpu_to_le32(chsw->timestamp), 4621 .cs_count = chsw->count, 4622 .cs_mode = chsw->block_tx, 4623 }; 4624 4625 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY)) 4626 return; 4627 4628 if (chsw->count >= mvmvif->csa_count && chsw->block_tx) { 4629 if (mvmvif->csa_misbehave) { 4630 /* Second time, give up on this AP*/ 4631 iwl_mvm_abort_channel_switch(hw, vif); 4632 ieee80211_chswitch_done(vif, false); 4633 mvmvif->csa_misbehave = false; 4634 return; 4635 } 4636 mvmvif->csa_misbehave = true; 4637 } 4638 mvmvif->csa_count = chsw->count; 4639 4640 IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d\n", mvmvif->id); 4641 4642 WARN_ON(iwl_mvm_send_cmd_pdu(mvm, 4643 WIDE_ID(MAC_CONF_GROUP, 4644 CHANNEL_SWITCH_TIME_EVENT_CMD), 4645 CMD_ASYNC, sizeof(cmd), &cmd)); 4646 } 4647 4648 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop) 4649 { 4650 int i; 4651 4652 if (!iwl_mvm_has_new_tx_api(mvm)) { 4653 if (drop) { 4654 mutex_lock(&mvm->mutex); 4655 iwl_mvm_flush_tx_path(mvm, 4656 iwl_mvm_flushable_queues(mvm) & queues, 0); 4657 mutex_unlock(&mvm->mutex); 4658 } else { 4659 iwl_trans_wait_tx_queues_empty(mvm->trans, queues); 4660 } 4661 return; 4662 } 4663 4664 mutex_lock(&mvm->mutex); 4665 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4666 struct ieee80211_sta *sta; 4667 4668 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4669 lockdep_is_held(&mvm->mutex)); 4670 if (IS_ERR_OR_NULL(sta)) 4671 continue; 4672 4673 if (drop) 4674 iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF, 0); 4675 else 4676 iwl_mvm_wait_sta_queues_empty(mvm, 4677 iwl_mvm_sta_from_mac80211(sta)); 4678 } 4679 mutex_unlock(&mvm->mutex); 4680 } 4681 4682 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw, 4683 struct ieee80211_vif *vif, u32 queues, bool drop) 4684 { 4685 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4686 struct iwl_mvm_vif *mvmvif; 4687 struct iwl_mvm_sta *mvmsta; 4688 struct ieee80211_sta *sta; 4689 int i; 4690 u32 msk = 0; 4691 4692 if (!vif) { 4693 iwl_mvm_flush_no_vif(mvm, queues, drop); 4694 return; 4695 } 4696 4697 if (vif->type != NL80211_IFTYPE_STATION) 4698 return; 4699 4700 /* Make sure we're done with the deferred traffic before flushing */ 4701 flush_work(&mvm->add_stream_wk); 4702 4703 mutex_lock(&mvm->mutex); 4704 mvmvif = iwl_mvm_vif_from_mac80211(vif); 4705 4706 /* flush the AP-station and all TDLS peers */ 4707 for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) { 4708 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], 4709 lockdep_is_held(&mvm->mutex)); 4710 if (IS_ERR_OR_NULL(sta)) 4711 continue; 4712 4713 mvmsta = iwl_mvm_sta_from_mac80211(sta); 4714 if (mvmsta->vif != vif) 4715 continue; 4716 4717 /* make sure only TDLS peers or the AP are flushed */ 4718 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls); 4719 4720 if (drop) { 4721 if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0)) 4722 IWL_ERR(mvm, "flush request fail\n"); 4723 } else { 4724 msk |= mvmsta->tfd_queue_msk; 4725 if (iwl_mvm_has_new_tx_api(mvm)) 4726 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta); 4727 } 4728 } 4729 4730 mutex_unlock(&mvm->mutex); 4731 4732 /* this can take a while, and we may need/want other operations 4733 * to succeed while doing this, so do it without the mutex held 4734 */ 4735 if (!drop && !iwl_mvm_has_new_tx_api(mvm)) 4736 iwl_trans_wait_tx_queues_empty(mvm->trans, msk); 4737 } 4738 4739 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx, 4740 struct survey_info *survey) 4741 { 4742 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4743 int ret; 4744 4745 memset(survey, 0, sizeof(*survey)); 4746 4747 /* only support global statistics right now */ 4748 if (idx != 0) 4749 return -ENOENT; 4750 4751 if (!fw_has_capa(&mvm->fw->ucode_capa, 4752 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS)) 4753 return -ENOENT; 4754 4755 mutex_lock(&mvm->mutex); 4756 4757 if (iwl_mvm_firmware_running(mvm)) { 4758 ret = iwl_mvm_request_statistics(mvm, false); 4759 if (ret) 4760 goto out; 4761 } 4762 4763 survey->filled = SURVEY_INFO_TIME | 4764 SURVEY_INFO_TIME_RX | 4765 SURVEY_INFO_TIME_TX | 4766 SURVEY_INFO_TIME_SCAN; 4767 survey->time = mvm->accu_radio_stats.on_time_rf + 4768 mvm->radio_stats.on_time_rf; 4769 do_div(survey->time, USEC_PER_MSEC); 4770 4771 survey->time_rx = mvm->accu_radio_stats.rx_time + 4772 mvm->radio_stats.rx_time; 4773 do_div(survey->time_rx, USEC_PER_MSEC); 4774 4775 survey->time_tx = mvm->accu_radio_stats.tx_time + 4776 mvm->radio_stats.tx_time; 4777 do_div(survey->time_tx, USEC_PER_MSEC); 4778 4779 survey->time_scan = mvm->accu_radio_stats.on_time_scan + 4780 mvm->radio_stats.on_time_scan; 4781 do_div(survey->time_scan, USEC_PER_MSEC); 4782 4783 ret = 0; 4784 out: 4785 mutex_unlock(&mvm->mutex); 4786 return ret; 4787 } 4788 4789 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo) 4790 { 4791 switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { 4792 case RATE_MCS_CHAN_WIDTH_20: 4793 rinfo->bw = RATE_INFO_BW_20; 4794 break; 4795 case RATE_MCS_CHAN_WIDTH_40: 4796 rinfo->bw = RATE_INFO_BW_40; 4797 break; 4798 case RATE_MCS_CHAN_WIDTH_80: 4799 rinfo->bw = RATE_INFO_BW_80; 4800 break; 4801 case RATE_MCS_CHAN_WIDTH_160: 4802 rinfo->bw = RATE_INFO_BW_160; 4803 break; 4804 } 4805 4806 if (rate_n_flags & RATE_MCS_HT_MSK) { 4807 rinfo->flags |= RATE_INFO_FLAGS_MCS; 4808 rinfo->mcs = u32_get_bits(rate_n_flags, RATE_HT_MCS_INDEX_MSK); 4809 rinfo->nss = u32_get_bits(rate_n_flags, 4810 RATE_HT_MCS_NSS_MSK) + 1; 4811 if (rate_n_flags & RATE_MCS_SGI_MSK) 4812 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4813 } else if (rate_n_flags & RATE_MCS_VHT_MSK) { 4814 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; 4815 rinfo->mcs = u32_get_bits(rate_n_flags, 4816 RATE_VHT_MCS_RATE_CODE_MSK); 4817 rinfo->nss = u32_get_bits(rate_n_flags, 4818 RATE_VHT_MCS_NSS_MSK) + 1; 4819 if (rate_n_flags & RATE_MCS_SGI_MSK) 4820 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; 4821 } else if (rate_n_flags & RATE_MCS_HE_MSK) { 4822 u32 gi_ltf = u32_get_bits(rate_n_flags, 4823 RATE_MCS_HE_GI_LTF_MSK); 4824 4825 rinfo->flags |= RATE_INFO_FLAGS_HE_MCS; 4826 rinfo->mcs = u32_get_bits(rate_n_flags, 4827 RATE_VHT_MCS_RATE_CODE_MSK); 4828 rinfo->nss = u32_get_bits(rate_n_flags, 4829 RATE_VHT_MCS_NSS_MSK) + 1; 4830 4831 if (rate_n_flags & RATE_MCS_HE_106T_MSK) { 4832 rinfo->bw = RATE_INFO_BW_HE_RU; 4833 rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106; 4834 } 4835 4836 switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) { 4837 case RATE_MCS_HE_TYPE_SU: 4838 case RATE_MCS_HE_TYPE_EXT_SU: 4839 if (gi_ltf == 0 || gi_ltf == 1) 4840 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4841 else if (gi_ltf == 2) 4842 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4843 else if (rate_n_flags & RATE_MCS_SGI_MSK) 4844 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4845 else 4846 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4847 break; 4848 case RATE_MCS_HE_TYPE_MU: 4849 if (gi_ltf == 0 || gi_ltf == 1) 4850 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8; 4851 else if (gi_ltf == 2) 4852 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4853 else 4854 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4855 break; 4856 case RATE_MCS_HE_TYPE_TRIG: 4857 if (gi_ltf == 0 || gi_ltf == 1) 4858 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6; 4859 else 4860 rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2; 4861 break; 4862 } 4863 4864 if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK) 4865 rinfo->he_dcm = 1; 4866 } else { 4867 switch (u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK)) { 4868 case IWL_RATE_1M_PLCP: 4869 rinfo->legacy = 10; 4870 break; 4871 case IWL_RATE_2M_PLCP: 4872 rinfo->legacy = 20; 4873 break; 4874 case IWL_RATE_5M_PLCP: 4875 rinfo->legacy = 55; 4876 break; 4877 case IWL_RATE_11M_PLCP: 4878 rinfo->legacy = 110; 4879 break; 4880 case IWL_RATE_6M_PLCP: 4881 rinfo->legacy = 60; 4882 break; 4883 case IWL_RATE_9M_PLCP: 4884 rinfo->legacy = 90; 4885 break; 4886 case IWL_RATE_12M_PLCP: 4887 rinfo->legacy = 120; 4888 break; 4889 case IWL_RATE_18M_PLCP: 4890 rinfo->legacy = 180; 4891 break; 4892 case IWL_RATE_24M_PLCP: 4893 rinfo->legacy = 240; 4894 break; 4895 case IWL_RATE_36M_PLCP: 4896 rinfo->legacy = 360; 4897 break; 4898 case IWL_RATE_48M_PLCP: 4899 rinfo->legacy = 480; 4900 break; 4901 case IWL_RATE_54M_PLCP: 4902 rinfo->legacy = 540; 4903 break; 4904 } 4905 } 4906 } 4907 4908 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw, 4909 struct ieee80211_vif *vif, 4910 struct ieee80211_sta *sta, 4911 struct station_info *sinfo) 4912 { 4913 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 4914 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 4915 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); 4916 4917 if (mvmsta->avg_energy) { 4918 sinfo->signal_avg = -(s8)mvmsta->avg_energy; 4919 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG); 4920 } 4921 4922 if (iwl_mvm_has_tlc_offload(mvm)) { 4923 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw; 4924 4925 iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate); 4926 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE); 4927 } 4928 4929 /* if beacon filtering isn't on mac80211 does it anyway */ 4930 if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER)) 4931 return; 4932 4933 if (!vif->bss_conf.assoc) 4934 return; 4935 4936 mutex_lock(&mvm->mutex); 4937 4938 if (mvmvif->ap_sta_id != mvmsta->sta_id) 4939 goto unlock; 4940 4941 if (iwl_mvm_request_statistics(mvm, false)) 4942 goto unlock; 4943 4944 sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons + 4945 mvmvif->beacon_stats.accu_num_beacons; 4946 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX); 4947 if (mvmvif->beacon_stats.avg_signal) { 4948 /* firmware only reports a value after RXing a few beacons */ 4949 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal; 4950 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG); 4951 } 4952 unlock: 4953 mutex_unlock(&mvm->mutex); 4954 } 4955 4956 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm, 4957 struct ieee80211_vif *vif, 4958 const struct ieee80211_event *event) 4959 { 4960 #define CHECK_MLME_TRIGGER(_cnt, _fmt...) \ 4961 do { \ 4962 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt)) \ 4963 break; \ 4964 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt); \ 4965 } while (0) 4966 4967 struct iwl_fw_dbg_trigger_tlv *trig; 4968 struct iwl_fw_dbg_trigger_mlme *trig_mlme; 4969 4970 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 4971 FW_DBG_TRIGGER_MLME); 4972 if (!trig) 4973 return; 4974 4975 trig_mlme = (void *)trig->data; 4976 4977 if (event->u.mlme.data == ASSOC_EVENT) { 4978 if (event->u.mlme.status == MLME_DENIED) 4979 CHECK_MLME_TRIGGER(stop_assoc_denied, 4980 "DENIED ASSOC: reason %d", 4981 event->u.mlme.reason); 4982 else if (event->u.mlme.status == MLME_TIMEOUT) 4983 CHECK_MLME_TRIGGER(stop_assoc_timeout, 4984 "ASSOC TIMEOUT"); 4985 } else if (event->u.mlme.data == AUTH_EVENT) { 4986 if (event->u.mlme.status == MLME_DENIED) 4987 CHECK_MLME_TRIGGER(stop_auth_denied, 4988 "DENIED AUTH: reason %d", 4989 event->u.mlme.reason); 4990 else if (event->u.mlme.status == MLME_TIMEOUT) 4991 CHECK_MLME_TRIGGER(stop_auth_timeout, 4992 "AUTH TIMEOUT"); 4993 } else if (event->u.mlme.data == DEAUTH_RX_EVENT) { 4994 CHECK_MLME_TRIGGER(stop_rx_deauth, 4995 "DEAUTH RX %d", event->u.mlme.reason); 4996 } else if (event->u.mlme.data == DEAUTH_TX_EVENT) { 4997 CHECK_MLME_TRIGGER(stop_tx_deauth, 4998 "DEAUTH TX %d", event->u.mlme.reason); 4999 } 5000 #undef CHECK_MLME_TRIGGER 5001 } 5002 5003 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm, 5004 struct ieee80211_vif *vif, 5005 const struct ieee80211_event *event) 5006 { 5007 struct iwl_fw_dbg_trigger_tlv *trig; 5008 struct iwl_fw_dbg_trigger_ba *ba_trig; 5009 5010 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif), 5011 FW_DBG_TRIGGER_BA); 5012 if (!trig) 5013 return; 5014 5015 ba_trig = (void *)trig->data; 5016 5017 if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid))) 5018 return; 5019 5020 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, 5021 "BAR received from %pM, tid %d, ssn %d", 5022 event->u.ba.sta->addr, event->u.ba.tid, 5023 event->u.ba.ssn); 5024 } 5025 5026 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw, 5027 struct ieee80211_vif *vif, 5028 const struct ieee80211_event *event) 5029 { 5030 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5031 5032 switch (event->type) { 5033 case MLME_EVENT: 5034 iwl_mvm_event_mlme_callback(mvm, vif, event); 5035 break; 5036 case BAR_RX_EVENT: 5037 iwl_mvm_event_bar_rx_callback(mvm, vif, event); 5038 break; 5039 case BA_FRAME_TIMEOUT: 5040 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta, 5041 event->u.ba.tid); 5042 break; 5043 default: 5044 break; 5045 } 5046 } 5047 5048 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm, 5049 struct iwl_mvm_internal_rxq_notif *notif, 5050 u32 size) 5051 { 5052 u32 qmask = BIT(mvm->trans->num_rx_queues) - 1; 5053 int ret; 5054 5055 5056 if (!iwl_mvm_has_new_rx_api(mvm)) 5057 return; 5058 5059 if (notif->sync) { 5060 notif->cookie = mvm->queue_sync_cookie; 5061 atomic_set(&mvm->queue_sync_counter, 5062 mvm->trans->num_rx_queues); 5063 } 5064 5065 ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, 5066 size, !notif->sync); 5067 if (ret) { 5068 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret); 5069 goto out; 5070 } 5071 5072 if (notif->sync) { 5073 lockdep_assert_held(&mvm->mutex); 5074 ret = wait_event_timeout(mvm->rx_sync_waitq, 5075 atomic_read(&mvm->queue_sync_counter) == 0 || 5076 iwl_mvm_is_radio_killed(mvm), 5077 HZ); 5078 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm)); 5079 } 5080 5081 out: 5082 atomic_set(&mvm->queue_sync_counter, 0); 5083 if (notif->sync) 5084 mvm->queue_sync_cookie++; 5085 } 5086 5087 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw) 5088 { 5089 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5090 struct iwl_mvm_internal_rxq_notif data = { 5091 .type = IWL_MVM_RXQ_EMPTY, 5092 .sync = 1, 5093 }; 5094 5095 mutex_lock(&mvm->mutex); 5096 iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data)); 5097 mutex_unlock(&mvm->mutex); 5098 } 5099 5100 static int 5101 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw, 5102 struct ieee80211_vif *vif, 5103 struct cfg80211_ftm_responder_stats *stats) 5104 { 5105 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5106 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); 5107 5108 if (vif->p2p || vif->type != NL80211_IFTYPE_AP || 5109 !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder) 5110 return -EINVAL; 5111 5112 mutex_lock(&mvm->mutex); 5113 *stats = mvm->ftm_resp_stats; 5114 mutex_unlock(&mvm->mutex); 5115 5116 stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) | 5117 BIT(NL80211_FTM_STATS_PARTIAL_NUM) | 5118 BIT(NL80211_FTM_STATS_FAILED_NUM) | 5119 BIT(NL80211_FTM_STATS_ASAP_NUM) | 5120 BIT(NL80211_FTM_STATS_NON_ASAP_NUM) | 5121 BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) | 5122 BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) | 5123 BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) | 5124 BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM); 5125 5126 return 0; 5127 } 5128 5129 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw, 5130 struct ieee80211_vif *vif, 5131 struct cfg80211_pmsr_request *request) 5132 { 5133 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5134 int ret; 5135 5136 mutex_lock(&mvm->mutex); 5137 ret = iwl_mvm_ftm_start(mvm, vif, request); 5138 mutex_unlock(&mvm->mutex); 5139 5140 return ret; 5141 } 5142 5143 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw, 5144 struct ieee80211_vif *vif, 5145 struct cfg80211_pmsr_request *request) 5146 { 5147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5148 5149 mutex_lock(&mvm->mutex); 5150 iwl_mvm_ftm_abort(mvm, request); 5151 mutex_unlock(&mvm->mutex); 5152 } 5153 5154 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb) 5155 { 5156 u8 protocol = ip_hdr(skb)->protocol; 5157 5158 if (!IS_ENABLED(CONFIG_INET)) 5159 return false; 5160 5161 return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP; 5162 } 5163 5164 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw, 5165 struct sk_buff *head, 5166 struct sk_buff *skb) 5167 { 5168 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); 5169 5170 /* For now don't aggregate IPv6 in AMSDU */ 5171 if (skb->protocol != htons(ETH_P_IP)) 5172 return false; 5173 5174 if (!iwl_mvm_is_csum_supported(mvm)) 5175 return true; 5176 5177 return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head); 5178 } 5179 5180 const struct ieee80211_ops iwl_mvm_hw_ops = { 5181 .tx = iwl_mvm_mac_tx, 5182 .wake_tx_queue = iwl_mvm_mac_wake_tx_queue, 5183 .ampdu_action = iwl_mvm_mac_ampdu_action, 5184 .get_antenna = iwl_mvm_op_get_antenna, 5185 .start = iwl_mvm_mac_start, 5186 .reconfig_complete = iwl_mvm_mac_reconfig_complete, 5187 .stop = iwl_mvm_mac_stop, 5188 .add_interface = iwl_mvm_mac_add_interface, 5189 .remove_interface = iwl_mvm_mac_remove_interface, 5190 .config = iwl_mvm_mac_config, 5191 .prepare_multicast = iwl_mvm_prepare_multicast, 5192 .configure_filter = iwl_mvm_configure_filter, 5193 .config_iface_filter = iwl_mvm_config_iface_filter, 5194 .bss_info_changed = iwl_mvm_bss_info_changed, 5195 .hw_scan = iwl_mvm_mac_hw_scan, 5196 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan, 5197 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove, 5198 .sta_state = iwl_mvm_mac_sta_state, 5199 .sta_notify = iwl_mvm_mac_sta_notify, 5200 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames, 5201 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames, 5202 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold, 5203 .sta_rc_update = iwl_mvm_sta_rc_update, 5204 .conf_tx = iwl_mvm_mac_conf_tx, 5205 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx, 5206 .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover, 5207 .flush = iwl_mvm_mac_flush, 5208 .sched_scan_start = iwl_mvm_mac_sched_scan_start, 5209 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop, 5210 .set_key = iwl_mvm_mac_set_key, 5211 .update_tkip_key = iwl_mvm_mac_update_tkip_key, 5212 .remain_on_channel = iwl_mvm_roc, 5213 .cancel_remain_on_channel = iwl_mvm_cancel_roc, 5214 .add_chanctx = iwl_mvm_add_chanctx, 5215 .remove_chanctx = iwl_mvm_remove_chanctx, 5216 .change_chanctx = iwl_mvm_change_chanctx, 5217 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx, 5218 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx, 5219 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx, 5220 5221 .start_ap = iwl_mvm_start_ap_ibss, 5222 .stop_ap = iwl_mvm_stop_ap_ibss, 5223 .join_ibss = iwl_mvm_start_ap_ibss, 5224 .leave_ibss = iwl_mvm_stop_ap_ibss, 5225 5226 .tx_last_beacon = iwl_mvm_tx_last_beacon, 5227 5228 .set_tim = iwl_mvm_set_tim, 5229 5230 .channel_switch = iwl_mvm_channel_switch, 5231 .pre_channel_switch = iwl_mvm_pre_channel_switch, 5232 .post_channel_switch = iwl_mvm_post_channel_switch, 5233 .abort_channel_switch = iwl_mvm_abort_channel_switch, 5234 .channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon, 5235 5236 .tdls_channel_switch = iwl_mvm_tdls_channel_switch, 5237 .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch, 5238 .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch, 5239 5240 .event_callback = iwl_mvm_mac_event_callback, 5241 5242 .sync_rx_queues = iwl_mvm_sync_rx_queues, 5243 5244 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd) 5245 5246 #ifdef CONFIG_PM_SLEEP 5247 /* look at d3.c */ 5248 .suspend = iwl_mvm_suspend, 5249 .resume = iwl_mvm_resume, 5250 .set_wakeup = iwl_mvm_set_wakeup, 5251 .set_rekey_data = iwl_mvm_set_rekey_data, 5252 #if IS_ENABLED(CONFIG_IPV6) 5253 .ipv6_addr_change = iwl_mvm_ipv6_addr_change, 5254 #endif 5255 .set_default_unicast_key = iwl_mvm_set_default_unicast_key, 5256 #endif 5257 .get_survey = iwl_mvm_mac_get_survey, 5258 .sta_statistics = iwl_mvm_mac_sta_statistics, 5259 .get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats, 5260 .start_pmsr = iwl_mvm_start_pmsr, 5261 .abort_pmsr = iwl_mvm_abort_pmsr, 5262 5263 .can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate, 5264 #ifdef CONFIG_IWLWIFI_DEBUGFS 5265 .sta_add_debugfs = iwl_mvm_sta_add_debugfs, 5266 #endif 5267 }; 5268