drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  10  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11  * Copyright(c) 2018        Intel Corporation
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of version 2 of the GNU General Public License as
  15  * published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope that it will be useful, but
  18  * WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * General Public License for more details.
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  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  25  * USA
  26  *
  27  * The full GNU General Public License is included in this distribution
  28  * in the file called COPYING.
  29  *
  30  * Contact Information:
  31  *  Intel Linux Wireless <linuxwifi@intel.com>
  32  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  33  *
  34  * BSD LICENSE
  35  *
  36  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  37  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  38  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  39  * Copyright(c) 2018        Intel Corporation
  40  * All rights reserved.
  41  *
  42  * Redistribution and use in source and binary forms, with or without
  43  * modification, are permitted provided that the following conditions
  44  * are met:
  45  *
  46  *  * Redistributions of source code must retain the above copyright
  47  *    notice, this list of conditions and the following disclaimer.
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  49  *    notice, this list of conditions and the following disclaimer in
  50  *    the documentation and/or other materials provided with the
  51  *    distribution.
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  53  *    contributors may be used to endorse or promote products derived
  54  *    from this software without specific prior written permission.
  55  *
  56  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  57  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  58  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  59  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  60  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  61  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  62  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  66  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  67  *
  68  *****************************************************************************/
  69 #include <linux/kernel.h>
  70 #include <linux/slab.h>
  71 #include <linux/skbuff.h>
  72 #include <linux/netdevice.h>
  73 #include <linux/etherdevice.h>
  74 #include <linux/ip.h>
  75 #include <linux/if_arp.h>
  76 #include <linux/time.h>
  77 #include <net/mac80211.h>
  78 #include <net/ieee80211_radiotap.h>
  79 #include <net/tcp.h>
  80
  81 #include "iwl-op-mode.h"
  82 #include "iwl-io.h"
  83 #include "mvm.h"
  84 #include "sta.h"
  85 #include "time-event.h"
  86 #include "iwl-eeprom-parse.h"
  87 #include "iwl-phy-db.h"
  88 #include "testmode.h"
  89 #include "fw/error-dump.h"
  90 #include "iwl-prph.h"
  91 #include "iwl-nvm-parse.h"
  92
  93 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  94         {
  95                 .max = 1,
  96                 .types = BIT(NL80211_IFTYPE_STATION),
  97         },
  98         {
  99                 .max = 1,
 100                 .types = BIT(NL80211_IFTYPE_AP) |
 101                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 102                         BIT(NL80211_IFTYPE_P2P_GO),
 103         },
 104         {
 105                 .max = 1,
 106                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 107         },
 108 };
 109
 110 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 111         {
 112                 .num_different_channels = 2,
 113                 .max_interfaces = 3,
 114                 .limits = iwl_mvm_limits,
 115                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 116         },
 117 };
 118
 119 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 120 /*
 121  * Use the reserved field to indicate magic values.
 122  * these values will only be used internally by the driver,
 123  * and won't make it to the fw (reserved will be 0).
 124  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 125  *      be the vif's ip address. in case there is not a single
 126  *      ip address (0, or more than 1), this attribute will
 127  *      be skipped.
 128  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 129  *      the LSB bytes of the vif's mac address
 130  */
 131 enum {
 132         BC_FILTER_MAGIC_NONE = 0,
 133         BC_FILTER_MAGIC_IP,
 134         BC_FILTER_MAGIC_MAC,
 135 };
 136
 137 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 138         {
 139                 /* arp */
 140                 .discard = 0,
 141                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 142                 .attrs = {
 143                         {
 144                                 /* frame type - arp, hw type - ethernet */
 145                                 .offset_type =
 146                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 147                                 .offset = sizeof(rfc1042_header),
 148                                 .val = cpu_to_be32(0x08060001),
 149                                 .mask = cpu_to_be32(0xffffffff),
 150                         },
 151                         {
 152                                 /* arp dest ip */
 153                                 .offset_type =
 154                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 155                                 .offset = sizeof(rfc1042_header) + 2 +
 156                                           sizeof(struct arphdr) +
 157                                           ETH_ALEN + sizeof(__be32) +
 158                                           ETH_ALEN,
 159                                 .mask = cpu_to_be32(0xffffffff),
 160                                 /* mark it as special field */
 161                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 162                         },
 163                 },
 164         },
 165         {
 166                 /* dhcp offer bcast */
 167                 .discard = 0,
 168                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 169                 .attrs = {
 170                         {
 171                                 /* udp dest port - 68 (bootp client)*/
 172                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 173                                 .offset = offsetof(struct udphdr, dest),
 174                                 .val = cpu_to_be32(0x00440000),
 175                                 .mask = cpu_to_be32(0xffff0000),
 176                         },
 177                         {
 178                                 /* dhcp - lsb bytes of client hw address */
 179                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 180                                 .offset = 38,
 181                                 .mask = cpu_to_be32(0xffffffff),
 182                                 /* mark it as special field */
 183                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 184                         },
 185                 },
 186         },
 187         /* last filter must be empty */
 188         {},
 189 };
 190 #endif
 191
 192 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 193 {
 194         if (!iwl_mvm_is_d0i3_supported(mvm))
 195                 return;
 196
 197         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 198         spin_lock_bh(&mvm->refs_lock);
 199         mvm->refs[ref_type]++;
 200         spin_unlock_bh(&mvm->refs_lock);
 201         iwl_trans_ref(mvm->trans);
 202 }
 203
 204 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 205 {
 206         if (!iwl_mvm_is_d0i3_supported(mvm))
 207                 return;
 208
 209         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 210         spin_lock_bh(&mvm->refs_lock);
 211         if (WARN_ON(!mvm->refs[ref_type])) {
 212                 spin_unlock_bh(&mvm->refs_lock);
 213                 return;
 214         }
 215         mvm->refs[ref_type]--;
 216         spin_unlock_bh(&mvm->refs_lock);
 217         iwl_trans_unref(mvm->trans);
 218 }
 219
 220 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 221                                      enum iwl_mvm_ref_type except_ref)
 222 {
 223         int i, j;
 224
 225         if (!iwl_mvm_is_d0i3_supported(mvm))
 226                 return;
 227
 228         spin_lock_bh(&mvm->refs_lock);
 229         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 230                 if (except_ref == i || !mvm->refs[i])
 231                         continue;
 232
 233                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 234                               i, mvm->refs[i]);
 235                 for (j = 0; j < mvm->refs[i]; j++)
 236                         iwl_trans_unref(mvm->trans);
 237                 mvm->refs[i] = 0;
 238         }
 239         spin_unlock_bh(&mvm->refs_lock);
 240 }
 241
 242 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 243 {
 244         int i;
 245         bool taken = false;
 246
 247         if (!iwl_mvm_is_d0i3_supported(mvm))
 248                 return true;
 249
 250         spin_lock_bh(&mvm->refs_lock);
 251         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 252                 if (mvm->refs[i]) {
 253                         taken = true;
 254                         break;
 255                 }
 256         }
 257         spin_unlock_bh(&mvm->refs_lock);
 258
 259         return taken;
 260 }
 261
 262 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 263 {
 264         iwl_mvm_ref(mvm, ref_type);
 265
 266         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 267                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 268                                 HZ)) {
 269                 WARN_ON_ONCE(1);
 270                 iwl_mvm_unref(mvm, ref_type);
 271                 return -EIO;
 272         }
 273
 274         return 0;
 275 }
 276
 277 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 278 {
 279         int i;
 280
 281         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 282         for (i = 0; i < NUM_PHY_CTX; i++) {
 283                 mvm->phy_ctxts[i].id = i;
 284                 mvm->phy_ctxts[i].ref = 0;
 285         }
 286 }
 287
 288 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 289                                                   const char *alpha2,
 290                                                   enum iwl_mcc_source src_id,
 291                                                   bool *changed)
 292 {
 293         struct ieee80211_regdomain *regd = NULL;
 294         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 295         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 296         struct iwl_mcc_update_resp *resp;
 297
 298         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 299
 300         lockdep_assert_held(&mvm->mutex);
 301
 302         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 303         if (IS_ERR_OR_NULL(resp)) {
 304                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 305                               PTR_ERR_OR_ZERO(resp));
 306                 goto out;
 307         }
 308
 309         if (changed) {
 310                 u32 status = le32_to_cpu(resp->status);
 311
 312                 *changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
 313                             status == MCC_RESP_ILLEGAL);
 314         }
 315
 316         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 317                                       __le32_to_cpu(resp->n_channels),
 318                                       resp->channels,
 319                                       __le16_to_cpu(resp->mcc),
 320                                       __le16_to_cpu(resp->geo_info),
 321                                       __le16_to_cpu(resp->cap));
 322         /* Store the return source id */
 323         src_id = resp->source_id;
 324         kfree(resp);
 325         if (IS_ERR_OR_NULL(regd)) {
 326                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 327                               PTR_ERR_OR_ZERO(regd));
 328                 goto out;
 329         }
 330
 331         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 332                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 333         mvm->lar_regdom_set = true;
 334         mvm->mcc_src = src_id;
 335
 336 out:
 337         return regd;
 338 }
 339
 340 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 341 {
 342         bool changed;
 343         struct ieee80211_regdomain *regd;
 344
 345         if (!iwl_mvm_is_lar_supported(mvm))
 346                 return;
 347
 348         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 349         if (!IS_ERR_OR_NULL(regd)) {
 350                 /* only update the regulatory core if changed */
 351                 if (changed)
 352                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 353
 354                 kfree(regd);
 355         }
 356 }
 357
 358 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 359                                                           bool *changed)
 360 {
 361         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 362                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 363                                      MCC_SOURCE_GET_CURRENT :
 364                                      MCC_SOURCE_OLD_FW, changed);
 365 }
 366
 367 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 368 {
 369         enum iwl_mcc_source used_src;
 370         struct ieee80211_regdomain *regd;
 371         int ret;
 372         bool changed;
 373         const struct ieee80211_regdomain *r =
 374                         rtnl_dereference(mvm->hw->wiphy->regd);
 375
 376         if (!r)
 377                 return -ENOENT;
 378
 379         /* save the last source in case we overwrite it below */
 380         used_src = mvm->mcc_src;
 381         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 382                 /* Notify the firmware we support wifi location updates */
 383                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 384                 if (!IS_ERR_OR_NULL(regd))
 385                         kfree(regd);
 386         }
 387
 388         /* Now set our last stored MCC and source */
 389         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 390                                      &changed);
 391         if (IS_ERR_OR_NULL(regd))
 392                 return -EIO;
 393
 394         /* update cfg80211 if the regdomain was changed */
 395         if (changed)
 396                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 397         else
 398                 ret = 0;
 399
 400         kfree(regd);
 401         return ret;
 402 }
 403
 404 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 405 {
 406         struct ieee80211_hw *hw = mvm->hw;
 407         int num_mac, ret, i;
 408         static const u32 mvm_ciphers[] = {
 409                 WLAN_CIPHER_SUITE_WEP40,
 410                 WLAN_CIPHER_SUITE_WEP104,
 411                 WLAN_CIPHER_SUITE_TKIP,
 412                 WLAN_CIPHER_SUITE_CCMP,
 413         };
 414
 415         /* Tell mac80211 our characteristics */
 416         ieee80211_hw_set(hw, SIGNAL_DBM);
 417         ieee80211_hw_set(hw, SPECTRUM_MGMT);
 418         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 419         ieee80211_hw_set(hw, QUEUE_CONTROL);
 420         ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 421         ieee80211_hw_set(hw, SUPPORTS_PS);
 422         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 423         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 424         ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
 425         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 426         ieee80211_hw_set(hw, CHANCTX_STA_CSA);
 427         ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
 428         ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
 429         ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
 430         ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
 431         ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
 432
 433         if (iwl_mvm_has_tlc_offload(mvm)) {
 434                 ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 435                 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 436         }
 437
 438         if (iwl_mvm_has_new_rx_api(mvm))
 439                 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 440
 441         if (fw_has_capa(&mvm->fw->ucode_capa,
 442                         IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
 443                 ieee80211_hw_set(hw, AP_LINK_PS);
 444         } else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
 445                 /*
 446                  * we absolutely need this for the new TX API since that comes
 447                  * with many more queues than the current code can deal with
 448                  * for station powersave
 449                  */
 450                 return -EINVAL;
 451         }
 452
 453         if (mvm->trans->num_rx_queues > 1)
 454                 ieee80211_hw_set(hw, USES_RSS);
 455
 456         if (mvm->trans->max_skb_frags)
 457                 hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
 458
 459         hw->queues = IEEE80211_MAX_QUEUES;
 460         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 461         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 462                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 463         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 464                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 465
 466         hw->radiotap_timestamp.units_pos =
 467                 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
 468                 IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
 469         /* this is the case for CCK frames, it's better (only 8) for OFDM */
 470         hw->radiotap_timestamp.accuracy = 22;
 471
 472         if (!iwl_mvm_has_tlc_offload(mvm))
 473                 hw->rate_control_algorithm = RS_NAME;
 474
 475         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 476         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 477
 478         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
 479         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 480         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 481         hw->wiphy->cipher_suites = mvm->ciphers;
 482
 483         if (iwl_mvm_has_new_rx_api(mvm)) {
 484                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 485                         WLAN_CIPHER_SUITE_GCMP;
 486                 hw->wiphy->n_cipher_suites++;
 487                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 488                         WLAN_CIPHER_SUITE_GCMP_256;
 489                 hw->wiphy->n_cipher_suites++;
 490         }
 491
 492         /* Enable 11w if software crypto is not enabled (as the
 493          * firmware will interpret some mgmt packets, so enabling it
 494          * with software crypto isn't safe).
 495          */
 496         if (!iwlwifi_mod_params.swcrypto) {
 497                 ieee80211_hw_set(hw, MFP_CAPABLE);
 498                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 499                         WLAN_CIPHER_SUITE_AES_CMAC;
 500                 hw->wiphy->n_cipher_suites++;
 501                 if (iwl_mvm_has_new_rx_api(mvm)) {
 502                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 503                                 WLAN_CIPHER_SUITE_BIP_GMAC_128;
 504                         hw->wiphy->n_cipher_suites++;
 505                         mvm->ciphers[hw->wiphy->n_cipher_suites] =
 506                                 WLAN_CIPHER_SUITE_BIP_GMAC_256;
 507                         hw->wiphy->n_cipher_suites++;
 508                 }
 509         }
 510
 511         /* currently FW API supports only one optional cipher scheme */
 512         if (mvm->fw->cs[0].cipher) {
 513                 const struct iwl_fw_cipher_scheme *fwcs = &mvm->fw->cs[0];
 514                 struct ieee80211_cipher_scheme *cs = &mvm->cs[0];
 515
 516                 mvm->hw->n_cipher_schemes = 1;
 517
 518                 cs->cipher = le32_to_cpu(fwcs->cipher);
 519                 cs->iftype = BIT(NL80211_IFTYPE_STATION);
 520                 cs->hdr_len = fwcs->hdr_len;
 521                 cs->pn_len = fwcs->pn_len;
 522                 cs->pn_off = fwcs->pn_off;
 523                 cs->key_idx_off = fwcs->key_idx_off;
 524                 cs->key_idx_mask = fwcs->key_idx_mask;
 525                 cs->key_idx_shift = fwcs->key_idx_shift;
 526                 cs->mic_len = fwcs->mic_len;
 527
 528                 mvm->hw->cipher_schemes = mvm->cs;
 529                 mvm->ciphers[hw->wiphy->n_cipher_suites] = cs->cipher;
 530                 hw->wiphy->n_cipher_suites++;
 531         }
 532
 533         ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
 534         hw->wiphy->features |=
 535                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 536                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 537                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 538
 539         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 540         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 541         hw->chanctx_data_size = sizeof(u16);
 542
 543         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 544                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 545                 BIT(NL80211_IFTYPE_AP) |
 546                 BIT(NL80211_IFTYPE_P2P_GO) |
 547                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 548                 BIT(NL80211_IFTYPE_ADHOC);
 549
 550         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 551         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 552         if (iwl_mvm_is_lar_supported(mvm))
 553                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 554         else
 555                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 556                                                REGULATORY_DISABLE_BEACON_HINTS;
 557
 558         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 559         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 560
 561         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 562         hw->wiphy->n_iface_combinations =
 563                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 564
 565         hw->wiphy->max_remain_on_channel_duration = 10000;
 566         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 567         /* we can compensate an offset of up to 3 channels = 15 MHz */
 568         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 569
 570         /* Extract MAC address */
 571         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 572         hw->wiphy->addresses = mvm->addresses;
 573         hw->wiphy->n_addresses = 1;
 574
 575         /* Extract additional MAC addresses if available */
 576         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 577                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 578
 579         for (i = 1; i < num_mac; i++) {
 580                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 581                        ETH_ALEN);
 582                 mvm->addresses[i].addr[5]++;
 583                 hw->wiphy->n_addresses++;
 584         }
 585
 586         iwl_mvm_reset_phy_ctxts(mvm);
 587
 588         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 589
 590         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 591
 592         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 593         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 594                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 595
 596         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 597                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 598         else
 599                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 600
 601         if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
 602                 hw->wiphy->bands[NL80211_BAND_2GHZ] =
 603                         &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
 604         if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
 605                 hw->wiphy->bands[NL80211_BAND_5GHZ] =
 606                         &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
 607
 608                 if (fw_has_capa(&mvm->fw->ucode_capa,
 609                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 610                     fw_has_api(&mvm->fw->ucode_capa,
 611                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 612                         hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
 613                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 614         }
 615
 616         hw->wiphy->hw_version = mvm->trans->hw_id;
 617
 618         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 619                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 620         else
 621                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 622
 623         hw->wiphy->max_sched_scan_reqs = 1;
 624         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 625         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 626         /* we create the 802.11 header and zero length SSID IE. */
 627         hw->wiphy->max_sched_scan_ie_len =
 628                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 629         hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
 630         hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
 631
 632         /*
 633          * the firmware uses u8 for num of iterations, but 0xff is saved for
 634          * infinite loop, so the maximum number of iterations is actually 254.
 635          */
 636         hw->wiphy->max_sched_scan_plan_iterations = 254;
 637
 638         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 639                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 640                                NL80211_FEATURE_P2P_GO_OPPPS |
 641                                NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
 642                                NL80211_FEATURE_DYNAMIC_SMPS |
 643                                NL80211_FEATURE_STATIC_SMPS |
 644                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 648                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 649         if (fw_has_capa(&mvm->fw->ucode_capa,
 650                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 651                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 652
 653         if (fw_has_capa(&mvm->fw->ucode_capa,
 654                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 655                 hw->wiphy->features |=
 656                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 657
 658         if (fw_has_capa(&mvm->fw->ucode_capa,
 659                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 660                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 661
 662         if (fw_has_api(&mvm->fw->ucode_capa,
 663                        IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
 664                 wiphy_ext_feature_set(hw->wiphy,
 665                                       NL80211_EXT_FEATURE_SCAN_START_TIME);
 666                 wiphy_ext_feature_set(hw->wiphy,
 667                                       NL80211_EXT_FEATURE_BSS_PARENT_TSF);
 668                 wiphy_ext_feature_set(hw->wiphy,
 669                                       NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 670         }
 671
 672         if (iwl_mvm_is_oce_supported(mvm)) {
 673                 wiphy_ext_feature_set(hw->wiphy,
 674                         NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
 675                 wiphy_ext_feature_set(hw->wiphy,
 676                         NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
 677                 wiphy_ext_feature_set(hw->wiphy,
 678                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
 679                 wiphy_ext_feature_set(hw->wiphy,
 680                         NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
 681         }
 682
 683         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 684
 685 #ifdef CONFIG_PM_SLEEP
 686         if (iwl_mvm_is_d0i3_supported(mvm) &&
 687             device_can_wakeup(mvm->trans->dev)) {
 688                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 689                 hw->wiphy->wowlan = &mvm->wowlan;
 690         }
 691
 692         if (mvm->fw->img[IWL_UCODE_WOWLAN].num_sec &&
 693             mvm->trans->ops->d3_suspend &&
 694             mvm->trans->ops->d3_resume &&
 695             device_can_wakeup(mvm->trans->dev)) {
 696                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 697                                      WIPHY_WOWLAN_DISCONNECT |
 698                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 699                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 700                                      WIPHY_WOWLAN_NET_DETECT;
 701                 if (!iwlwifi_mod_params.swcrypto)
 702                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 703                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 704                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 705
 706                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 707                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 708                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 709                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 710                 hw->wiphy->wowlan = &mvm->wowlan;
 711         }
 712 #endif
 713
 714 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 715         /* assign default bcast filtering configuration */
 716         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 717 #endif
 718
 719         ret = iwl_mvm_leds_init(mvm);
 720         if (ret)
 721                 return ret;
 722
 723         if (fw_has_capa(&mvm->fw->ucode_capa,
 724                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 725                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 726                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 727                 ieee80211_hw_set(hw, TDLS_WIDER_BW);
 728         }
 729
 730         if (fw_has_capa(&mvm->fw->ucode_capa,
 731                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 732                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 733                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 734         }
 735
 736         hw->netdev_features |= mvm->cfg->features;
 737         if (!iwl_mvm_is_csum_supported(mvm)) {
 738                 hw->netdev_features &= ~(IWL_TX_CSUM_NETIF_FLAGS |
 739                                          NETIF_F_RXCSUM);
 740                 /* We may support SW TX CSUM */
 741                 if (IWL_MVM_SW_TX_CSUM_OFFLOAD)
 742                         hw->netdev_features |= IWL_TX_CSUM_NETIF_FLAGS;
 743         }
 744
 745         ret = ieee80211_register_hw(mvm->hw);
 746         if (ret)
 747                 iwl_mvm_leds_exit(mvm);
 748         mvm->init_status |= IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
 749
 750         if (mvm->cfg->vht_mu_mimo_supported)
 751                 wiphy_ext_feature_set(hw->wiphy,
 752                                       NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
 753
 754         return ret;
 755 }
 756
 757 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 758                              struct ieee80211_sta *sta,
 759                              struct sk_buff *skb)
 760 {
 761         struct iwl_mvm_sta *mvmsta;
 762         bool defer = false;
 763
 764         /*
 765          * double check the IN_D0I3 flag both before and after
 766          * taking the spinlock, in order to prevent taking
 767          * the spinlock when not needed.
 768          */
 769         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 770                 return false;
 771
 772         spin_lock(&mvm->d0i3_tx_lock);
 773         /*
 774          * testing the flag again ensures the skb dequeue
 775          * loop (on d0i3 exit) hasn't run yet.
 776          */
 777         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 778                 goto out;
 779
 780         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 781         if (mvmsta->sta_id == IWL_MVM_INVALID_STA ||
 782             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 783                 goto out;
 784
 785         __skb_queue_tail(&mvm->d0i3_tx, skb);
 786         ieee80211_stop_queues(mvm->hw);
 787
 788         /* trigger wakeup */
 789         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 790         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 791
 792         defer = true;
 793 out:
 794         spin_unlock(&mvm->d0i3_tx_lock);
 795         return defer;
 796 }
 797
 798 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 799                            struct ieee80211_tx_control *control,
 800                            struct sk_buff *skb)
 801 {
 802         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 803         struct ieee80211_sta *sta = control->sta;
 804         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 805         struct ieee80211_hdr *hdr = (void *)skb->data;
 806
 807         if (iwl_mvm_is_radio_killed(mvm)) {
 808                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 809                 goto drop;
 810         }
 811
 812         if (info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 813             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 814             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 815                 goto drop;
 816
 817         /* treat non-bufferable MMPDUs on AP interfaces as broadcast */
 818         if ((info->control.vif->type == NL80211_IFTYPE_AP ||
 819              info->control.vif->type == NL80211_IFTYPE_ADHOC) &&
 820             ieee80211_is_mgmt(hdr->frame_control) &&
 821             !ieee80211_is_bufferable_mmpdu(hdr->frame_control))
 822                 sta = NULL;
 823
 824         /* If there is no sta, and it's not offchannel - send through AP */
 825         if (info->control.vif->type == NL80211_IFTYPE_STATION &&
 826             info->hw_queue != IWL_MVM_OFFCHANNEL_QUEUE && !sta) {
 827                 struct iwl_mvm_vif *mvmvif =
 828                         iwl_mvm_vif_from_mac80211(info->control.vif);
 829                 u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
 830
 831                 if (ap_sta_id < IWL_MVM_STATION_COUNT) {
 832                         /* mac80211 holds rcu read lock */
 833                         sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
 834                         if (IS_ERR_OR_NULL(sta))
 835                                 goto drop;
 836                 }
 837         }
 838
 839         if (sta) {
 840                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 841                         return;
 842                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 843                         goto drop;
 844                 return;
 845         }
 846
 847         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 848                 goto drop;
 849         return;
 850  drop:
 851         ieee80211_free_txskb(hw, skb);
 852 }
 853
 854 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 855 {
 856         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 857                 return false;
 858         return true;
 859 }
 860
 861 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 862 {
 863         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 864                 return false;
 865         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 866                 return true;
 867
 868         /* enabled by default */
 869         return true;
 870 }
 871
 872 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)           \
 873         do {                                                            \
 874                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))                \
 875                         break;                                          \
 876                 iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt);    \
 877         } while (0)
 878
 879 static void
 880 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 881                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 882                             enum ieee80211_ampdu_mlme_action action)
 883 {
 884         struct iwl_fw_dbg_trigger_tlv *trig;
 885         struct iwl_fw_dbg_trigger_ba *ba_trig;
 886
 887         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 888                 return;
 889
 890         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 891         ba_trig = (void *)trig->data;
 892
 893         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
 894                                            ieee80211_vif_to_wdev(vif), trig))
 895                 return;
 896
 897         switch (action) {
 898         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 899                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 900                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 901
 902                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 903                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 904                                  sta->addr, tid, tid_data->ssn);
 905                 break;
 906                 }
 907         case IEEE80211_AMPDU_TX_STOP_CONT:
 908                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 909                                  "TX AGG STOP: MAC %pM tid %d\n",
 910                                  sta->addr, tid);
 911                 break;
 912         case IEEE80211_AMPDU_RX_START:
 913                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 914                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 915                                  sta->addr, tid, rx_ba_ssn);
 916                 break;
 917         case IEEE80211_AMPDU_RX_STOP:
 918                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 919                                  "RX AGG STOP: MAC %pM tid %d\n",
 920                                  sta->addr, tid);
 921                 break;
 922         default:
 923                 break;
 924         }
 925 }
 926
 927 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 928                                     struct ieee80211_vif *vif,
 929                                     struct ieee80211_ampdu_params *params)
 930 {
 931         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 932         int ret;
 933         bool tx_agg_ref = false;
 934         struct ieee80211_sta *sta = params->sta;
 935         enum ieee80211_ampdu_mlme_action action = params->action;
 936         u16 tid = params->tid;
 937         u16 *ssn = &params->ssn;
 938         u16 buf_size = params->buf_size;
 939         bool amsdu = params->amsdu;
 940         u16 timeout = params->timeout;
 941
 942         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 943                      sta->addr, tid, action);
 944
 945         if (!(mvm->nvm_data->sku_cap_11n_enable))
 946                 return -EACCES;
 947
 948         /* return from D0i3 before starting a new Tx aggregation */
 949         switch (action) {
 950         case IEEE80211_AMPDU_TX_START:
 951         case IEEE80211_AMPDU_TX_STOP_CONT:
 952         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 953         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 954         case IEEE80211_AMPDU_TX_OPERATIONAL:
 955                 /*
 956                  * for tx start, wait synchronously until D0i3 exit to
 957                  * get the correct sequence number for the tid.
 958                  * additionally, some other ampdu actions use direct
 959                  * target access, which is not handled automatically
 960                  * by the trans layer (unlike commands), so wait for
 961                  * d0i3 exit in these cases as well.
 962                  */
 963                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 964                 if (ret)
 965                         return ret;
 966
 967                 tx_agg_ref = true;
 968                 break;
 969         default:
 970                 break;
 971         }
 972
 973         mutex_lock(&mvm->mutex);
 974
 975         switch (action) {
 976         case IEEE80211_AMPDU_RX_START:
 977                 if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
 978                                 iwl_mvm_sta_from_mac80211(sta)->sta_id) {
 979                         struct iwl_mvm_vif *mvmvif;
 980                         u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
 981                         struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
 982
 983                         mdata->opened_rx_ba_sessions = true;
 984                         mvmvif = iwl_mvm_vif_from_mac80211(vif);
 985                         cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
 986                 }
 987                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 988                         ret = -EINVAL;
 989                         break;
 990                 }
 991                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
 992                                          timeout);
 993                 break;
 994         case IEEE80211_AMPDU_RX_STOP:
 995                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
 996                                          timeout);
 997                 break;
 998         case IEEE80211_AMPDU_TX_START:
 999                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
1000                         ret = -EINVAL;
1001                         break;
1002                 }
1003                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
1004                 break;
1005         case IEEE80211_AMPDU_TX_STOP_CONT:
1006                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
1007                 break;
1008         case IEEE80211_AMPDU_TX_STOP_FLUSH:
1009         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
1010                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
1011                 break;
1012         case IEEE80211_AMPDU_TX_OPERATIONAL:
1013                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
1014                                               buf_size, amsdu);
1015                 break;
1016         default:
1017                 WARN_ON_ONCE(1);
1018                 ret = -EINVAL;
1019                 break;
1020         }
1021
1022         if (!ret) {
1023                 u16 rx_ba_ssn = 0;
1024
1025                 if (action == IEEE80211_AMPDU_RX_START)
1026                         rx_ba_ssn = *ssn;
1027
1028                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
1029                                             rx_ba_ssn, action);
1030         }
1031         mutex_unlock(&mvm->mutex);
1032
1033         /*
1034          * If the tid is marked as started, we won't use it for offloaded
1035          * traffic on the next D0i3 entry. It's safe to unref.
1036          */
1037         if (tx_agg_ref)
1038                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
1039
1040         return ret;
1041 }
1042
1043 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
1044                                      struct ieee80211_vif *vif)
1045 {
1046         struct iwl_mvm *mvm = data;
1047         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1048
1049         mvmvif->uploaded = false;
1050         mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
1051
1052         spin_lock_bh(&mvm->time_event_lock);
1053         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
1054         spin_unlock_bh(&mvm->time_event_lock);
1055
1056         mvmvif->phy_ctxt = NULL;
1057         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
1058 }
1059
1060 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1061 {
1062         /* clear the D3 reconfig, we only need it to avoid dumping a
1063          * firmware coredump on reconfiguration, we shouldn't do that
1064          * on D3->D0 transition
1065          */
1066         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1067                 mvm->fwrt.dump.desc = &iwl_dump_desc_assert;
1068                 iwl_fw_error_dump(&mvm->fwrt);
1069         }
1070
1071         /* cleanup all stale references (scan, roc), but keep the
1072          * ucode_down ref until reconfig is complete
1073          */
1074         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1075
1076         iwl_mvm_stop_device(mvm);
1077
1078         mvm->scan_status = 0;
1079         mvm->ps_disabled = false;
1080         mvm->calibrating = false;
1081
1082         /* just in case one was running */
1083         iwl_mvm_cleanup_roc_te(mvm);
1084         ieee80211_remain_on_channel_expired(mvm->hw);
1085
1086         /*
1087          * cleanup all interfaces, even inactive ones, as some might have
1088          * gone down during the HW restart
1089          */
1090         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1091
1092         mvm->p2p_device_vif = NULL;
1093         mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
1094
1095         iwl_mvm_reset_phy_ctxts(mvm);
1096         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1097         memset(mvm->sta_deferred_frames, 0, sizeof(mvm->sta_deferred_frames));
1098         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1099         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1100
1101         ieee80211_wake_queues(mvm->hw);
1102
1103         /* clear any stale d0i3 state */
1104         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1105
1106         mvm->vif_count = 0;
1107         mvm->rx_ba_sessions = 0;
1108         mvm->fwrt.dump.conf = FW_DBG_INVALID;
1109         mvm->monitor_on = false;
1110
1111         /* keep statistics ticking */
1112         iwl_mvm_accu_radio_stats(mvm);
1113 }
1114
1115 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1116 {
1117         int ret;
1118
1119         lockdep_assert_held(&mvm->mutex);
1120
1121         if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1122                 /*
1123                  * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1124                  * so later code will - from now on - see that we're doing it.
1125                  */
1126                 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1127                 clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1128                 /* Clean up some internal and mac80211 state on restart */
1129                 iwl_mvm_restart_cleanup(mvm);
1130         } else {
1131                 /* Hold the reference to prevent runtime suspend while
1132                  * the start procedure runs.  It's a bit confusing
1133                  * that the UCODE_DOWN reference is taken, but it just
1134                  * means "UCODE is not UP yet". ( TODO: rename this
1135                  * reference).
1136                  */
1137                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1138         }
1139         ret = iwl_mvm_up(mvm);
1140
1141         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1142                 /* Something went wrong - we need to finish some cleanup
1143                  * that normally iwl_mvm_mac_restart_complete() below
1144                  * would do.
1145                  */
1146                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1147                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1148         }
1149
1150         return ret;
1151 }
1152
1153 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1154 {
1155         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1156         int ret;
1157
1158         /* Some hw restart cleanups must not hold the mutex */
1159         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1160                 /*
1161                  * Make sure we are out of d0i3. This is needed
1162                  * to make sure the reference accounting is correct
1163                  * (and there is no stale d0i3_exit_work).
1164                  */
1165                 wait_event_timeout(mvm->d0i3_exit_waitq,
1166                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1167                                              &mvm->status),
1168                                    HZ);
1169         }
1170
1171         mutex_lock(&mvm->mutex);
1172         ret = __iwl_mvm_mac_start(mvm);
1173         mutex_unlock(&mvm->mutex);
1174
1175         return ret;
1176 }
1177
1178 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1179 {
1180         int ret;
1181
1182         mutex_lock(&mvm->mutex);
1183
1184         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1185         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1186         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1187         if (ret)
1188                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1189                         ret);
1190
1191         /* allow transport/FW low power modes */
1192         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1193
1194         /*
1195          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1196          * of packets the FW sent out, so we must reconnect.
1197          */
1198         iwl_mvm_teardown_tdls_peers(mvm);
1199
1200         mutex_unlock(&mvm->mutex);
1201 }
1202
1203 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1204 {
1205         if (iwl_mvm_is_d0i3_supported(mvm) &&
1206             iwl_mvm_enter_d0i3_on_suspend(mvm))
1207                 WARN_ONCE(!wait_event_timeout(mvm->d0i3_exit_waitq,
1208                                               !test_bit(IWL_MVM_STATUS_IN_D0I3,
1209                                                         &mvm->status),
1210                                               HZ),
1211                           "D0i3 exit on resume timed out\n");
1212 }
1213
1214 static void
1215 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1216                               enum ieee80211_reconfig_type reconfig_type)
1217 {
1218         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1219
1220         switch (reconfig_type) {
1221         case IEEE80211_RECONFIG_TYPE_RESTART:
1222                 iwl_mvm_restart_complete(mvm);
1223                 break;
1224         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1225                 iwl_mvm_resume_complete(mvm);
1226                 break;
1227         }
1228 }
1229
1230 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1231 {
1232         lockdep_assert_held(&mvm->mutex);
1233
1234         /* firmware counters are obviously reset now, but we shouldn't
1235          * partially track so also clear the fw_reset_accu counters.
1236          */
1237         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1238
1239         /* async_handlers_wk is now blocked */
1240
1241         /*
1242          * The work item could be running or queued if the
1243          * ROC time event stops just as we get here.
1244          */
1245         flush_work(&mvm->roc_done_wk);
1246
1247         iwl_mvm_stop_device(mvm);
1248
1249         iwl_mvm_async_handlers_purge(mvm);
1250         /* async_handlers_list is empty and will stay empty: HW is stopped */
1251
1252         /* the fw is stopped, the aux sta is dead: clean up driver state */
1253         iwl_mvm_del_aux_sta(mvm);
1254
1255         /*
1256          * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1257          * hw (as restart_complete() won't be called in this case) and mac80211
1258          * won't execute the restart.
1259          * But make sure to cleanup interfaces that have gone down before/during
1260          * HW restart was requested.
1261          */
1262         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1263             test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1264                                &mvm->status))
1265                 ieee80211_iterate_interfaces(mvm->hw, 0,
1266                                              iwl_mvm_cleanup_iterator, mvm);
1267
1268         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1269          * make sure there's nothing left there and warn if any is found.
1270          */
1271         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1272                 int i;
1273
1274                 for (i = 0; i < mvm->max_scans; i++) {
1275                         if (WARN_ONCE(mvm->scan_uid_status[i],
1276                                       "UMAC scan UID %d status was not cleaned\n",
1277                                       i))
1278                                 mvm->scan_uid_status[i] = 0;
1279                 }
1280         }
1281 }
1282
1283 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1284 {
1285         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1286
1287         flush_work(&mvm->d0i3_exit_work);
1288         flush_work(&mvm->async_handlers_wk);
1289         flush_work(&mvm->add_stream_wk);
1290
1291         /*
1292          * Lock and clear the firmware running bit here already, so that
1293          * new commands coming in elsewhere, e.g. from debugfs, will not
1294          * be able to proceed. This is important here because one of those
1295          * debugfs files causes the firmware dump to be triggered, and if we
1296          * don't stop debugfs accesses before canceling that it could be
1297          * retriggered after we flush it but before we've cleared the bit.
1298          */
1299         clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1300
1301         iwl_fw_cancel_dump(&mvm->fwrt);
1302         cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1303         cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1304         iwl_fw_free_dump_desc(&mvm->fwrt);
1305
1306         mutex_lock(&mvm->mutex);
1307         __iwl_mvm_mac_stop(mvm);
1308         mutex_unlock(&mvm->mutex);
1309
1310         /*
1311          * The worker might have been waiting for the mutex, let it run and
1312          * discover that its list is now empty.
1313          */
1314         cancel_work_sync(&mvm->async_handlers_wk);
1315 }
1316
1317 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1318 {
1319         u16 i;
1320
1321         lockdep_assert_held(&mvm->mutex);
1322
1323         for (i = 0; i < NUM_PHY_CTX; i++)
1324                 if (!mvm->phy_ctxts[i].ref)
1325                         return &mvm->phy_ctxts[i];
1326
1327         IWL_ERR(mvm, "No available PHY context\n");
1328         return NULL;
1329 }
1330
1331 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1332                                 s16 tx_power)
1333 {
1334         struct iwl_dev_tx_power_cmd cmd = {
1335                 .v3.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1336                 .v3.mac_context_id =
1337                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1338                 .v3.pwr_restriction = cpu_to_le16(8 * tx_power),
1339         };
1340         int len = sizeof(cmd);
1341
1342         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1343                 cmd.v3.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1344
1345         if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1346                 len = sizeof(cmd.v3);
1347
1348         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
1349 }
1350
1351 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1352                                      struct ieee80211_vif *vif)
1353 {
1354         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1355         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1356         int ret;
1357
1358         mvmvif->mvm = mvm;
1359
1360         /*
1361          * make sure D0i3 exit is completed, otherwise a target access
1362          * during tx queue configuration could be done when still in
1363          * D0i3 state.
1364          */
1365         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1366         if (ret)
1367                 return ret;
1368
1369         /*
1370          * Not much to do here. The stack will not allow interface
1371          * types or combinations that we didn't advertise, so we
1372          * don't really have to check the types.
1373          */
1374
1375         mutex_lock(&mvm->mutex);
1376
1377         /* make sure that beacon statistics don't go backwards with FW reset */
1378         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1379                 mvmvif->beacon_stats.accu_num_beacons +=
1380                         mvmvif->beacon_stats.num_beacons;
1381
1382         /* Allocate resources for the MAC context, and add it to the fw  */
1383         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1384         if (ret)
1385                 goto out_unlock;
1386
1387         /* Counting number of interfaces is needed for legacy PM */
1388         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1389                 mvm->vif_count++;
1390
1391         /*
1392          * The AP binding flow can be done only after the beacon
1393          * template is configured (which happens only in the mac80211
1394          * start_ap() flow), and adding the broadcast station can happen
1395          * only after the binding.
1396          * In addition, since modifying the MAC before adding a bcast
1397          * station is not allowed by the FW, delay the adding of MAC context to
1398          * the point where we can also add the bcast station.
1399          * In short: there's not much we can do at this point, other than
1400          * allocating resources :)
1401          */
1402         if (vif->type == NL80211_IFTYPE_AP ||
1403             vif->type == NL80211_IFTYPE_ADHOC) {
1404                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1405                 if (ret) {
1406                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1407                         goto out_release;
1408                 }
1409
1410                 /*
1411                  * Only queue for this station is the mcast queue,
1412                  * which shouldn't be in TFD mask anyway
1413                  */
1414                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1415                                                0, vif->type,
1416                                                IWL_STA_MULTICAST);
1417                 if (ret)
1418                         goto out_release;
1419
1420                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1421                 goto out_unlock;
1422         }
1423
1424         mvmvif->features |= hw->netdev_features;
1425
1426         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1427         if (ret)
1428                 goto out_release;
1429
1430         ret = iwl_mvm_power_update_mac(mvm);
1431         if (ret)
1432                 goto out_remove_mac;
1433
1434         /* beacon filtering */
1435         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1436         if (ret)
1437                 goto out_remove_mac;
1438
1439         if (!mvm->bf_allowed_vif &&
1440             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1441                 mvm->bf_allowed_vif = mvmvif;
1442                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1443                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1444         }
1445
1446         /*
1447          * P2P_DEVICE interface does not have a channel context assigned to it,
1448          * so a dedicated PHY context is allocated to it and the corresponding
1449          * MAC context is bound to it at this stage.
1450          */
1451         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1452
1453                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1454                 if (!mvmvif->phy_ctxt) {
1455                         ret = -ENOSPC;
1456                         goto out_free_bf;
1457                 }
1458
1459                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1460                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1461                 if (ret)
1462                         goto out_unref_phy;
1463
1464                 ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1465                 if (ret)
1466                         goto out_unbind;
1467
1468                 /* Save a pointer to p2p device vif, so it can later be used to
1469                  * update the p2p device MAC when a GO is started/stopped */
1470                 mvm->p2p_device_vif = vif;
1471         }
1472
1473         iwl_mvm_tcm_add_vif(mvm, vif);
1474
1475         if (vif->type == NL80211_IFTYPE_MONITOR)
1476                 mvm->monitor_on = true;
1477
1478         iwl_mvm_vif_dbgfs_register(mvm, vif);
1479         goto out_unlock;
1480
1481  out_unbind:
1482         iwl_mvm_binding_remove_vif(mvm, vif);
1483  out_unref_phy:
1484         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1485  out_free_bf:
1486         if (mvm->bf_allowed_vif == mvmvif) {
1487                 mvm->bf_allowed_vif = NULL;
1488                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1489                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1490         }
1491  out_remove_mac:
1492         mvmvif->phy_ctxt = NULL;
1493         iwl_mvm_mac_ctxt_remove(mvm, vif);
1494  out_release:
1495         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1496                 mvm->vif_count--;
1497  out_unlock:
1498         mutex_unlock(&mvm->mutex);
1499
1500         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1501
1502         return ret;
1503 }
1504
1505 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1506                                         struct ieee80211_vif *vif)
1507 {
1508         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1509                 /*
1510                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1511                  * We assume here that all the packets sent to the OFFCHANNEL
1512                  * queue are sent in ROC session.
1513                  */
1514                 flush_work(&mvm->roc_done_wk);
1515         }
1516 }
1517
1518 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1519                                          struct ieee80211_vif *vif)
1520 {
1521         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1522         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1523
1524         iwl_mvm_prepare_mac_removal(mvm, vif);
1525
1526         if (!(vif->type == NL80211_IFTYPE_AP ||
1527               vif->type == NL80211_IFTYPE_ADHOC))
1528                 iwl_mvm_tcm_rm_vif(mvm, vif);
1529
1530         mutex_lock(&mvm->mutex);
1531
1532         if (mvm->bf_allowed_vif == mvmvif) {
1533                 mvm->bf_allowed_vif = NULL;
1534                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1535                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1536         }
1537
1538         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1539
1540         /*
1541          * For AP/GO interface, the tear down of the resources allocated to the
1542          * interface is be handled as part of the stop_ap flow.
1543          */
1544         if (vif->type == NL80211_IFTYPE_AP ||
1545             vif->type == NL80211_IFTYPE_ADHOC) {
1546 #ifdef CONFIG_NL80211_TESTMODE
1547                 if (vif == mvm->noa_vif) {
1548                         mvm->noa_vif = NULL;
1549                         mvm->noa_duration = 0;
1550                 }
1551 #endif
1552                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1553                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1554                 goto out_release;
1555         }
1556
1557         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1558                 mvm->p2p_device_vif = NULL;
1559                 iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1560                 iwl_mvm_binding_remove_vif(mvm, vif);
1561                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1562                 mvmvif->phy_ctxt = NULL;
1563         }
1564
1565         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1566                 mvm->vif_count--;
1567
1568         iwl_mvm_power_update_mac(mvm);
1569         iwl_mvm_mac_ctxt_remove(mvm, vif);
1570
1571         if (vif->type == NL80211_IFTYPE_MONITOR)
1572                 mvm->monitor_on = false;
1573
1574 out_release:
1575         mutex_unlock(&mvm->mutex);
1576 }
1577
1578 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1579 {
1580         return 0;
1581 }
1582
1583 struct iwl_mvm_mc_iter_data {
1584         struct iwl_mvm *mvm;
1585         int port_id;
1586 };
1587
1588 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1589                                       struct ieee80211_vif *vif)
1590 {
1591         struct iwl_mvm_mc_iter_data *data = _data;
1592         struct iwl_mvm *mvm = data->mvm;
1593         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1594         struct iwl_host_cmd hcmd = {
1595                 .id = MCAST_FILTER_CMD,
1596                 .flags = CMD_ASYNC,
1597                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1598         };
1599         int ret, len;
1600
1601         /* if we don't have free ports, mcast frames will be dropped */
1602         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1603                 return;
1604
1605         if (vif->type != NL80211_IFTYPE_STATION ||
1606             !vif->bss_conf.assoc)
1607                 return;
1608
1609         cmd->port_id = data->port_id++;
1610         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1611         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1612
1613         hcmd.len[0] = len;
1614         hcmd.data[0] = cmd;
1615
1616         ret = iwl_mvm_send_cmd(mvm, &hcmd);
1617         if (ret)
1618                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1619 }
1620
1621 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1622 {
1623         struct iwl_mvm_mc_iter_data iter_data = {
1624                 .mvm = mvm,
1625         };
1626
1627         lockdep_assert_held(&mvm->mutex);
1628
1629         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1630                 return;
1631
1632         ieee80211_iterate_active_interfaces_atomic(
1633                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1634                 iwl_mvm_mc_iface_iterator, &iter_data);
1635 }
1636
1637 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1638                                      struct netdev_hw_addr_list *mc_list)
1639 {
1640         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1641         struct iwl_mcast_filter_cmd *cmd;
1642         struct netdev_hw_addr *addr;
1643         int addr_count;
1644         bool pass_all;
1645         int len;
1646
1647         addr_count = netdev_hw_addr_list_count(mc_list);
1648         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1649                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1650         if (pass_all)
1651                 addr_count = 0;
1652
1653         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1654         cmd = kzalloc(len, GFP_ATOMIC);
1655         if (!cmd)
1656                 return 0;
1657
1658         if (pass_all) {
1659                 cmd->pass_all = 1;
1660                 return (u64)(unsigned long)cmd;
1661         }
1662
1663         netdev_hw_addr_list_for_each(addr, mc_list) {
1664                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1665                                    cmd->count, addr->addr);
1666                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1667                        addr->addr, ETH_ALEN);
1668                 cmd->count++;
1669         }
1670
1671         return (u64)(unsigned long)cmd;
1672 }
1673
1674 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1675                                      unsigned int changed_flags,
1676                                      unsigned int *total_flags,
1677                                      u64 multicast)
1678 {
1679         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1680         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1681
1682         mutex_lock(&mvm->mutex);
1683
1684         /* replace previous configuration */
1685         kfree(mvm->mcast_filter_cmd);
1686         mvm->mcast_filter_cmd = cmd;
1687
1688         if (!cmd)
1689                 goto out;
1690
1691         if (changed_flags & FIF_ALLMULTI)
1692                 cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1693
1694         if (cmd->pass_all)
1695                 cmd->count = 0;
1696
1697         iwl_mvm_recalc_multicast(mvm);
1698 out:
1699         mutex_unlock(&mvm->mutex);
1700         *total_flags = 0;
1701 }
1702
1703 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1704                                         struct ieee80211_vif *vif,
1705                                         unsigned int filter_flags,
1706                                         unsigned int changed_flags)
1707 {
1708         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1709
1710         /* We support only filter for probe requests */
1711         if (!(changed_flags & FIF_PROBE_REQ))
1712                 return;
1713
1714         /* Supported only for p2p client interfaces */
1715         if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1716             !vif->p2p)
1717                 return;
1718
1719         mutex_lock(&mvm->mutex);
1720         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1721         mutex_unlock(&mvm->mutex);
1722 }
1723
1724 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1725 struct iwl_bcast_iter_data {
1726         struct iwl_mvm *mvm;
1727         struct iwl_bcast_filter_cmd *cmd;
1728         u8 current_filter;
1729 };
1730
1731 static void
1732 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1733                          const struct iwl_fw_bcast_filter *in_filter,
1734                          struct iwl_fw_bcast_filter *out_filter)
1735 {
1736         struct iwl_fw_bcast_filter_attr *attr;
1737         int i;
1738
1739         memcpy(out_filter, in_filter, sizeof(*out_filter));
1740
1741         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1742                 attr = &out_filter->attrs[i];
1743
1744                 if (!attr->mask)
1745                         break;
1746
1747                 switch (attr->reserved1) {
1748                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1749                         if (vif->bss_conf.arp_addr_cnt != 1) {
1750                                 attr->mask = 0;
1751                                 continue;
1752                         }
1753
1754                         attr->val = vif->bss_conf.arp_addr_list[0];
1755                         break;
1756                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1757                         attr->val = *(__be32 *)&vif->addr[2];
1758                         break;
1759                 default:
1760                         break;
1761                 }
1762                 attr->reserved1 = 0;
1763                 out_filter->num_attrs++;
1764         }
1765 }
1766
1767 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1768                                           struct ieee80211_vif *vif)
1769 {
1770         struct iwl_bcast_iter_data *data = _data;
1771         struct iwl_mvm *mvm = data->mvm;
1772         struct iwl_bcast_filter_cmd *cmd = data->cmd;
1773         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1774         struct iwl_fw_bcast_mac *bcast_mac;
1775         int i;
1776
1777         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1778                 return;
1779
1780         bcast_mac = &cmd->macs[mvmvif->id];
1781
1782         /*
1783          * enable filtering only for associated stations, but not for P2P
1784          * Clients
1785          */
1786         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1787             !vif->bss_conf.assoc)
1788                 return;
1789
1790         bcast_mac->default_discard = 1;
1791
1792         /* copy all configured filters */
1793         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1794                 /*
1795                  * Make sure we don't exceed our filters limit.
1796                  * if there is still a valid filter to be configured,
1797                  * be on the safe side and just allow bcast for this mac.
1798                  */
1799                 if (WARN_ON_ONCE(data->current_filter >=
1800                                  ARRAY_SIZE(cmd->filters))) {
1801                         bcast_mac->default_discard = 0;
1802                         bcast_mac->attached_filters = 0;
1803                         break;
1804                 }
1805
1806                 iwl_mvm_set_bcast_filter(vif,
1807                                          &mvm->bcast_filters[i],
1808                                          &cmd->filters[data->current_filter]);
1809
1810                 /* skip current filter if it contains no attributes */
1811                 if (!cmd->filters[data->current_filter].num_attrs)
1812                         continue;
1813
1814                 /* attach the filter to current mac */
1815                 bcast_mac->attached_filters |=
1816                                 cpu_to_le16(BIT(data->current_filter));
1817
1818                 data->current_filter++;
1819         }
1820 }
1821
1822 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1823                                     struct iwl_bcast_filter_cmd *cmd)
1824 {
1825         struct iwl_bcast_iter_data iter_data = {
1826                 .mvm = mvm,
1827                 .cmd = cmd,
1828         };
1829
1830         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
1831                 return false;
1832
1833         memset(cmd, 0, sizeof(*cmd));
1834         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1835         cmd->max_macs = ARRAY_SIZE(cmd->macs);
1836
1837 #ifdef CONFIG_IWLWIFI_DEBUGFS
1838         /* use debugfs filters/macs if override is configured */
1839         if (mvm->dbgfs_bcast_filtering.override) {
1840                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1841                        sizeof(cmd->filters));
1842                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1843                        sizeof(cmd->macs));
1844                 return true;
1845         }
1846 #endif
1847
1848         /* if no filters are configured, do nothing */
1849         if (!mvm->bcast_filters)
1850                 return false;
1851
1852         /* configure and attach these filters for each associated sta vif */
1853         ieee80211_iterate_active_interfaces(
1854                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1855                 iwl_mvm_bcast_filter_iterator, &iter_data);
1856
1857         return true;
1858 }
1859
1860 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1861 {
1862         struct iwl_bcast_filter_cmd cmd;
1863
1864         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1865                 return 0;
1866
1867         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1868                 return 0;
1869
1870         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
1871                                     sizeof(cmd), &cmd);
1872 }
1873 #else
1874 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm)
1875 {
1876         return 0;
1877 }
1878 #endif
1879
1880 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1881                                     struct ieee80211_vif *vif)
1882 {
1883         struct iwl_mu_group_mgmt_cmd cmd = {};
1884
1885         memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1886                WLAN_MEMBERSHIP_LEN);
1887         memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1888                WLAN_USER_POSITION_LEN);
1889
1890         return iwl_mvm_send_cmd_pdu(mvm,
1891                                     WIDE_ID(DATA_PATH_GROUP,
1892                                             UPDATE_MU_GROUPS_CMD),
1893                                     0, sizeof(cmd), &cmd);
1894 }
1895
1896 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1897                                            struct ieee80211_vif *vif)
1898 {
1899         if (vif->mu_mimo_owner) {
1900                 struct iwl_mu_group_mgmt_notif *notif = _data;
1901
1902                 /*
1903                  * MU-MIMO Group Id action frame is little endian. We treat
1904                  * the data received from firmware as if it came from the
1905                  * action frame, so no conversion is needed.
1906                  */
1907                 ieee80211_update_mu_groups(vif,
1908                                            (u8 *)&notif->membership_status,
1909                                            (u8 *)&notif->user_position);
1910         }
1911 }
1912
1913 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1914                                struct iwl_rx_cmd_buffer *rxb)
1915 {
1916         struct iwl_rx_packet *pkt = rxb_addr(rxb);
1917         struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1918
1919         ieee80211_iterate_active_interfaces_atomic(
1920                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1921                         iwl_mvm_mu_mimo_iface_iterator, notif);
1922 }
1923
1924 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1925 {
1926         u8 byte_num = ppe_pos_bit / 8;
1927         u8 bit_num = ppe_pos_bit % 8;
1928         u8 residue_bits;
1929         u8 res;
1930
1931         if (bit_num <= 5)
1932                 return (ppe[byte_num] >> bit_num) &
1933                        (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1934
1935         /*
1936          * If bit_num > 5, we have to combine bits with next byte.
1937          * Calculate how many bits we need to take from current byte (called
1938          * here "residue_bits"), and add them to bits from next byte.
1939          */
1940
1941         residue_bits = 8 - bit_num;
1942
1943         res = (ppe[byte_num + 1] &
1944                (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
1945               residue_bits;
1946         res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
1947
1948         return res;
1949 }
1950
1951 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
1952                                struct ieee80211_vif *vif, u8 sta_id)
1953 {
1954         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1955         struct iwl_he_sta_context_cmd sta_ctxt_cmd = {
1956                 .sta_id = sta_id,
1957                 .tid_limit = IWL_MAX_TID_COUNT,
1958                 .bss_color = vif->bss_conf.bss_color,
1959                 .htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
1960                 .frame_time_rts_th =
1961                         cpu_to_le16(vif->bss_conf.frame_time_rts_th),
1962         };
1963         struct ieee80211_sta *sta;
1964         u32 flags;
1965         int i;
1966
1967         rcu_read_lock();
1968
1969         sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
1970         if (IS_ERR(sta)) {
1971                 rcu_read_unlock();
1972                 WARN(1, "Can't find STA to configure HE\n");
1973                 return;
1974         }
1975
1976         if (!sta->he_cap.has_he) {
1977                 rcu_read_unlock();
1978                 return;
1979         }
1980
1981         flags = 0;
1982
1983         /* HTC flags */
1984         if (sta->he_cap.he_cap_elem.mac_cap_info[0] &
1985             IEEE80211_HE_MAC_CAP0_HTC_HE)
1986                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
1987         if ((sta->he_cap.he_cap_elem.mac_cap_info[1] &
1988               IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
1989             (sta->he_cap.he_cap_elem.mac_cap_info[2] &
1990               IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
1991                 u8 link_adap =
1992                         ((sta->he_cap.he_cap_elem.mac_cap_info[2] &
1993                           IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
1994                          (sta->he_cap.he_cap_elem.mac_cap_info[1] &
1995                           IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
1996
1997                 if (link_adap == 2)
1998                         sta_ctxt_cmd.htc_flags |=
1999                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2000                 else if (link_adap == 3)
2001                         sta_ctxt_cmd.htc_flags |=
2002                                 cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2003         }
2004         if (sta->he_cap.he_cap_elem.mac_cap_info[2] &
2005             IEEE80211_HE_MAC_CAP2_UL_MU_RESP_SCHED)
2006                 sta_ctxt_cmd.htc_flags |=
2007                         cpu_to_le32(IWL_HE_HTC_UL_MU_RESP_SCHED);
2008         if (sta->he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2009                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2010         if (sta->he_cap.he_cap_elem.mac_cap_info[3] &
2011             IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2012                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2013         if (sta->he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2014                 sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2015
2016         /*
2017          * Initialize the PPE thresholds to "None" (7), as described in Table
2018          * 9-262ac of 80211.ax/D3.0.
2019          */
2020         memset(&sta_ctxt_cmd.pkt_ext, 7, sizeof(sta_ctxt_cmd.pkt_ext));
2021
2022         /* If PPE Thresholds exist, parse them into a FW-familiar format. */
2023         if (sta->he_cap.he_cap_elem.phy_cap_info[6] &
2024             IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2025                 u8 nss = (sta->he_cap.ppe_thres[0] &
2026                           IEEE80211_PPE_THRES_NSS_MASK) + 1;
2027                 u8 ru_index_bitmap =
2028                         (sta->he_cap.ppe_thres[0] &
2029                          IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK) >>
2030                         IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS;
2031                 u8 *ppe = &sta->he_cap.ppe_thres[0];
2032                 u8 ppe_pos_bit = 7; /* Starting after PPE header */
2033
2034                 /*
2035                  * FW currently supports only nss == MAX_HE_SUPP_NSS
2036                  *
2037                  * If nss > MAX: we can ignore values we don't support
2038                  * If nss < MAX: we can set zeros in other streams
2039                  */
2040                 if (nss > MAX_HE_SUPP_NSS) {
2041                         IWL_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
2042                                  MAX_HE_SUPP_NSS);
2043                         nss = MAX_HE_SUPP_NSS;
2044                 }
2045
2046                 for (i = 0; i < nss; i++) {
2047                         u8 ru_index_tmp = ru_index_bitmap << 1;
2048                         u8 bw;
2049
2050                         for (bw = 0; bw < MAX_HE_CHANNEL_BW_INDX; bw++) {
2051                                 ru_index_tmp >>= 1;
2052                                 if (!(ru_index_tmp & 1))
2053                                         continue;
2054
2055                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][1] =
2056                                         iwl_mvm_he_get_ppe_val(ppe,
2057                                                                ppe_pos_bit);
2058                                 ppe_pos_bit +=
2059                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2060                                 sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw][0] =
2061                                         iwl_mvm_he_get_ppe_val(ppe,
2062                                                                ppe_pos_bit);
2063                                 ppe_pos_bit +=
2064                                         IEEE80211_PPE_THRES_INFO_PPET_SIZE;
2065                         }
2066                 }
2067
2068                 flags |= STA_CTXT_HE_PACKET_EXT;
2069         }
2070         rcu_read_unlock();
2071
2072         /* Mark MU EDCA as enabled, unless none detected on some AC */
2073         flags |= STA_CTXT_HE_MU_EDCA_CW;
2074         for (i = 0; i < AC_NUM; i++) {
2075                 struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2076                         &mvmvif->queue_params[i].mu_edca_param_rec;
2077
2078                 if (!mvmvif->queue_params[i].mu_edca) {
2079                         flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2080                         break;
2081                 }
2082
2083                 sta_ctxt_cmd.trig_based_txf[i].cwmin =
2084                         cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2085                 sta_ctxt_cmd.trig_based_txf[i].cwmax =
2086                         cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2087                 sta_ctxt_cmd.trig_based_txf[i].aifsn =
2088                         cpu_to_le16(mu_edca->aifsn);
2089                 sta_ctxt_cmd.trig_based_txf[i].mu_time =
2090                         cpu_to_le16(mu_edca->mu_edca_timer);
2091         }
2092
2093         if (vif->bss_conf.multi_sta_back_32bit)
2094                 flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2095
2096         if (vif->bss_conf.ack_enabled)
2097                 flags |= STA_CTXT_HE_ACK_ENABLED;
2098
2099         if (vif->bss_conf.uora_exists) {
2100                 flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2101
2102                 sta_ctxt_cmd.rand_alloc_ecwmin =
2103                         vif->bss_conf.uora_ocw_range & 0x7;
2104                 sta_ctxt_cmd.rand_alloc_ecwmax =
2105                         (vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2106         }
2107
2108         /* TODO: support Multi BSSID IE */
2109
2110         sta_ctxt_cmd.flags = cpu_to_le32(flags);
2111
2112         if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(STA_HE_CTXT_CMD,
2113                                                  DATA_PATH_GROUP, 0),
2114                                  0, sizeof(sta_ctxt_cmd), &sta_ctxt_cmd))
2115                 IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2116 }
2117
2118 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2119                                              struct ieee80211_vif *vif,
2120                                              struct ieee80211_bss_conf *bss_conf,
2121                                              u32 changes)
2122 {
2123         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2124         int ret;
2125
2126         /*
2127          * Re-calculate the tsf id, as the master-slave relations depend on the
2128          * beacon interval, which was not known when the station interface was
2129          * added.
2130          */
2131         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) {
2132                 if (vif->bss_conf.he_support &&
2133                     !iwlwifi_mod_params.disable_11ax)
2134                         iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2135
2136                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2137         }
2138
2139         /*
2140          * If we're not associated yet, take the (new) BSSID before associating
2141          * so the firmware knows. If we're already associated, then use the old
2142          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2143          * branch for disassociation below.
2144          */
2145         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2146                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2147
2148         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2149         if (ret)
2150                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2151
2152         /* after sending it once, adopt mac80211 data */
2153         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2154         mvmvif->associated = bss_conf->assoc;
2155
2156         if (changes & BSS_CHANGED_ASSOC) {
2157                 if (bss_conf->assoc) {
2158                         /* clear statistics to get clean beacon counter */
2159                         iwl_mvm_request_statistics(mvm, true);
2160                         memset(&mvmvif->beacon_stats, 0,
2161                                sizeof(mvmvif->beacon_stats));
2162
2163                         /* add quota for this interface */
2164                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2165                         if (ret) {
2166                                 IWL_ERR(mvm, "failed to update quotas\n");
2167                                 return;
2168                         }
2169
2170                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2171                                      &mvm->status)) {
2172                                 /*
2173                                  * If we're restarting then the firmware will
2174                                  * obviously have lost synchronisation with
2175                                  * the AP. It will attempt to synchronise by
2176                                  * itself, but we can make it more reliable by
2177                                  * scheduling a session protection time event.
2178                                  *
2179                                  * The firmware needs to receive a beacon to
2180                                  * catch up with synchronisation, use 110% of
2181                                  * the beacon interval.
2182                                  *
2183                                  * Set a large maximum delay to allow for more
2184                                  * than a single interface.
2185                                  */
2186                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2187                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2188                                                         5 * dur, false);
2189                         }
2190
2191                         iwl_mvm_sf_update(mvm, vif, false);
2192                         iwl_mvm_power_vif_assoc(mvm, vif);
2193                         if (vif->p2p) {
2194                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2195                                 iwl_mvm_update_smps(mvm, vif,
2196                                                     IWL_MVM_SMPS_REQ_PROT,
2197                                                     IEEE80211_SMPS_DYNAMIC);
2198                         }
2199                 } else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2200                         /*
2201                          * If update fails - SF might be running in associated
2202                          * mode while disassociated - which is forbidden.
2203                          */
2204                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2205                                   "Failed to update SF upon disassociation\n");
2206
2207                         /*
2208                          * If we get an assert during the connection (after the
2209                          * station has been added, but before the vif is set
2210                          * to associated), mac80211 will re-add the station and
2211                          * then configure the vif. Since the vif is not
2212                          * associated, we would remove the station here and
2213                          * this would fail the recovery.
2214                          */
2215                         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2216                                       &mvm->status)) {
2217                                 /*
2218                                  * Remove AP station now that
2219                                  * the MAC is unassoc
2220                                  */
2221                                 ret = iwl_mvm_rm_sta_id(mvm, vif,
2222                                                         mvmvif->ap_sta_id);
2223                                 if (ret)
2224                                         IWL_ERR(mvm,
2225                                                 "failed to remove AP station\n");
2226
2227                                 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2228                                         mvm->d0i3_ap_sta_id =
2229                                                 IWL_MVM_INVALID_STA;
2230                                 mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2231                         }
2232
2233                         /* remove quota for this interface */
2234                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2235                         if (ret)
2236                                 IWL_ERR(mvm, "failed to update quotas\n");
2237
2238                         if (vif->p2p)
2239                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2240
2241                         /* this will take the cleared BSSID from bss_conf */
2242                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2243                         if (ret)
2244                                 IWL_ERR(mvm,
2245                                         "failed to update MAC %pM (clear after unassoc)\n",
2246                                         vif->addr);
2247                 }
2248
2249                 /*
2250                  * The firmware tracks the MU-MIMO group on its own.
2251                  * However, on HW restart we should restore this data.
2252                  */
2253                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2254                     (changes & BSS_CHANGED_MU_GROUPS) && vif->mu_mimo_owner) {
2255                         ret = iwl_mvm_update_mu_groups(mvm, vif);
2256                         if (ret)
2257                                 IWL_ERR(mvm,
2258                                         "failed to update VHT MU_MIMO groups\n");
2259                 }
2260
2261                 iwl_mvm_recalc_multicast(mvm);
2262                 iwl_mvm_configure_bcast_filter(mvm);
2263
2264                 /* reset rssi values */
2265                 mvmvif->bf_data.ave_beacon_signal = 0;
2266
2267                 iwl_mvm_bt_coex_vif_change(mvm);
2268                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2269                                     IEEE80211_SMPS_AUTOMATIC);
2270                 if (fw_has_capa(&mvm->fw->ucode_capa,
2271                                 IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2272                         iwl_mvm_config_scan(mvm);
2273         }
2274
2275         if (changes & BSS_CHANGED_BEACON_INFO) {
2276                 /*
2277                  * We received a beacon from the associated AP so
2278                  * remove the session protection.
2279                  */
2280                 iwl_mvm_stop_session_protection(mvm, vif);
2281
2282                 iwl_mvm_sf_update(mvm, vif, false);
2283                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2284         }
2285
2286         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2287                        /*
2288                         * Send power command on every beacon change,
2289                         * because we may have not enabled beacon abort yet.
2290                         */
2291                        BSS_CHANGED_BEACON_INFO)) {
2292                 ret = iwl_mvm_power_update_mac(mvm);
2293                 if (ret)
2294                         IWL_ERR(mvm, "failed to update power mode\n");
2295         }
2296
2297         if (changes & BSS_CHANGED_TXPOWER) {
2298                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2299                                 bss_conf->txpower);
2300                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2301         }
2302
2303         if (changes & BSS_CHANGED_CQM) {
2304                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2305                 /* reset cqm events tracking */
2306                 mvmvif->bf_data.last_cqm_event = 0;
2307                 if (mvmvif->bf_data.bf_enabled) {
2308                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2309                         if (ret)
2310                                 IWL_ERR(mvm,
2311                                         "failed to update CQM thresholds\n");
2312                 }
2313         }
2314
2315         if (changes & BSS_CHANGED_ARP_FILTER) {
2316                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2317                 iwl_mvm_configure_bcast_filter(mvm);
2318         }
2319 }
2320
2321 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2322                                  struct ieee80211_vif *vif)
2323 {
2324         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2325         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2326         int ret;
2327
2328         /*
2329          * iwl_mvm_mac_ctxt_add() might read directly from the device
2330          * (the system time), so make sure it is available.
2331          */
2332         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2333         if (ret)
2334                 return ret;
2335
2336         mutex_lock(&mvm->mutex);
2337
2338         /* Send the beacon template */
2339         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2340         if (ret)
2341                 goto out_unlock;
2342
2343         /*
2344          * Re-calculate the tsf id, as the master-slave relations depend on the
2345          * beacon interval, which was not known when the AP interface was added.
2346          */
2347         if (vif->type == NL80211_IFTYPE_AP)
2348                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2349
2350         mvmvif->ap_assoc_sta_count = 0;
2351
2352         /* Add the mac context */
2353         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2354         if (ret)
2355                 goto out_unlock;
2356
2357         /* Perform the binding */
2358         ret = iwl_mvm_binding_add_vif(mvm, vif);
2359         if (ret)
2360                 goto out_remove;
2361
2362         /*
2363          * This is not very nice, but the simplest:
2364          * For older FWs adding the mcast sta before the bcast station may
2365          * cause assert 0x2b00.
2366          * This is fixed in later FW so make the order of removal depend on
2367          * the TLV
2368          */
2369         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2370                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2371                 if (ret)
2372                         goto out_unbind;
2373                 /*
2374                  * Send the bcast station. At this stage the TBTT and DTIM time
2375                  * events are added and applied to the scheduler
2376                  */
2377                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2378                 if (ret) {
2379                         iwl_mvm_rm_mcast_sta(mvm, vif);
2380                         goto out_unbind;
2381                 }
2382         } else {
2383                 /*
2384                  * Send the bcast station. At this stage the TBTT and DTIM time
2385                  * events are added and applied to the scheduler
2386                  */
2387                 ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2388                 if (ret)
2389                         goto out_unbind;
2390                 ret = iwl_mvm_add_mcast_sta(mvm, vif);
2391                 if (ret) {
2392                         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2393                         goto out_unbind;
2394                 }
2395         }
2396
2397         /* must be set before quota calculations */
2398         mvmvif->ap_ibss_active = true;
2399
2400         /* power updated needs to be done before quotas */
2401         iwl_mvm_power_update_mac(mvm);
2402
2403         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2404         if (ret)
2405                 goto out_quota_failed;
2406
2407         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2408         if (vif->p2p && mvm->p2p_device_vif)
2409                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2410
2411         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2412
2413         iwl_mvm_bt_coex_vif_change(mvm);
2414
2415         /* we don't support TDLS during DCM */
2416         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2417                 iwl_mvm_teardown_tdls_peers(mvm);
2418
2419         goto out_unlock;
2420
2421 out_quota_failed:
2422         iwl_mvm_power_update_mac(mvm);
2423         mvmvif->ap_ibss_active = false;
2424         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2425         iwl_mvm_rm_mcast_sta(mvm, vif);
2426 out_unbind:
2427         iwl_mvm_binding_remove_vif(mvm, vif);
2428 out_remove:
2429         iwl_mvm_mac_ctxt_remove(mvm, vif);
2430 out_unlock:
2431         mutex_unlock(&mvm->mutex);
2432         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2433         return ret;
2434 }
2435
2436 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2437                                  struct ieee80211_vif *vif)
2438 {
2439         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2440         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2441
2442         iwl_mvm_prepare_mac_removal(mvm, vif);
2443
2444         mutex_lock(&mvm->mutex);
2445
2446         /* Handle AP stop while in CSA */
2447         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2448                 iwl_mvm_remove_time_event(mvm, mvmvif,
2449                                           &mvmvif->time_event_data);
2450                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2451                 mvmvif->csa_countdown = false;
2452         }
2453
2454         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2455                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2456                 mvm->csa_tx_block_bcn_timeout = 0;
2457         }
2458
2459         mvmvif->ap_ibss_active = false;
2460         mvm->ap_last_beacon_gp2 = 0;
2461
2462         iwl_mvm_bt_coex_vif_change(mvm);
2463
2464         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2465
2466         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2467         if (vif->p2p && mvm->p2p_device_vif)
2468                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2469
2470         iwl_mvm_update_quotas(mvm, false, NULL);
2471
2472         /*
2473          * This is not very nice, but the simplest:
2474          * For older FWs removing the mcast sta before the bcast station may
2475          * cause assert 0x2b00.
2476          * This is fixed in later FW (which will stop beaconing when removing
2477          * bcast station).
2478          * So make the order of removal depend on the TLV
2479          */
2480         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2481                 iwl_mvm_rm_mcast_sta(mvm, vif);
2482         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2483         if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2484                 iwl_mvm_rm_mcast_sta(mvm, vif);
2485         iwl_mvm_binding_remove_vif(mvm, vif);
2486
2487         iwl_mvm_power_update_mac(mvm);
2488
2489         iwl_mvm_mac_ctxt_remove(mvm, vif);
2490
2491         mutex_unlock(&mvm->mutex);
2492 }
2493
2494 static void
2495 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2496                                  struct ieee80211_vif *vif,
2497                                  struct ieee80211_bss_conf *bss_conf,
2498                                  u32 changes)
2499 {
2500         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2501
2502         /* Changes will be applied when the AP/IBSS is started */
2503         if (!mvmvif->ap_ibss_active)
2504                 return;
2505
2506         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2507                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2508             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2509                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2510
2511         /* Need to send a new beacon template to the FW */
2512         if (changes & BSS_CHANGED_BEACON &&
2513             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2514                 IWL_WARN(mvm, "Failed updating beacon data\n");
2515
2516         if (changes & BSS_CHANGED_TXPOWER) {
2517                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2518                                 bss_conf->txpower);
2519                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2520         }
2521 }
2522
2523 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2524                                      struct ieee80211_vif *vif,
2525                                      struct ieee80211_bss_conf *bss_conf,
2526                                      u32 changes)
2527 {
2528         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2529
2530         /*
2531          * iwl_mvm_bss_info_changed_station() might call
2532          * iwl_mvm_protect_session(), which reads directly from
2533          * the device (the system time), so make sure it is available.
2534          */
2535         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2536                 return;
2537
2538         mutex_lock(&mvm->mutex);
2539
2540         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2541                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2542
2543         switch (vif->type) {
2544         case NL80211_IFTYPE_STATION:
2545                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2546                 break;
2547         case NL80211_IFTYPE_AP:
2548         case NL80211_IFTYPE_ADHOC:
2549                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2550                 break;
2551         case NL80211_IFTYPE_MONITOR:
2552                 if (changes & BSS_CHANGED_MU_GROUPS)
2553                         iwl_mvm_update_mu_groups(mvm, vif);
2554                 break;
2555         default:
2556                 /* shouldn't happen */
2557                 WARN_ON_ONCE(1);
2558         }
2559
2560         mutex_unlock(&mvm->mutex);
2561         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2562 }
2563
2564 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2565                                struct ieee80211_vif *vif,
2566                                struct ieee80211_scan_request *hw_req)
2567 {
2568         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2569         int ret;
2570
2571         if (hw_req->req.n_channels == 0 ||
2572             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2573                 return -EINVAL;
2574
2575         mutex_lock(&mvm->mutex);
2576         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2577         mutex_unlock(&mvm->mutex);
2578
2579         return ret;
2580 }
2581
2582 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2583                                        struct ieee80211_vif *vif)
2584 {
2585         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2586
2587         mutex_lock(&mvm->mutex);
2588
2589         /* Due to a race condition, it's possible that mac80211 asks
2590          * us to stop a hw_scan when it's already stopped.  This can
2591          * happen, for instance, if we stopped the scan ourselves,
2592          * called ieee80211_scan_completed() and the userspace called
2593          * cancel scan scan before ieee80211_scan_work() could run.
2594          * To handle that, simply return if the scan is not running.
2595         */
2596         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2597                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2598
2599         mutex_unlock(&mvm->mutex);
2600 }
2601
2602 static void
2603 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2604                                   struct ieee80211_sta *sta, u16 tids,
2605                                   int num_frames,
2606                                   enum ieee80211_frame_release_type reason,
2607                                   bool more_data)
2608 {
2609         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2610
2611         /* Called when we need to transmit (a) frame(s) from mac80211 */
2612
2613         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2614                                           tids, more_data, false);
2615 }
2616
2617 static void
2618 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2619                                     struct ieee80211_sta *sta, u16 tids,
2620                                     int num_frames,
2621                                     enum ieee80211_frame_release_type reason,
2622                                     bool more_data)
2623 {
2624         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2625
2626         /* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2627
2628         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2629                                           tids, more_data, true);
2630 }
2631
2632 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2633                                      enum sta_notify_cmd cmd,
2634                                      struct ieee80211_sta *sta)
2635 {
2636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2637         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2638         unsigned long txqs = 0, tids = 0;
2639         int tid;
2640
2641         /*
2642          * If we have TVQM then we get too high queue numbers - luckily
2643          * we really shouldn't get here with that because such hardware
2644          * should have firmware supporting buffer station offload.
2645          */
2646         if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2647                 return;
2648
2649         spin_lock_bh(&mvmsta->lock);
2650         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2651                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2652
2653                 if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2654                         continue;
2655
2656                 __set_bit(tid_data->txq_id, &txqs);
2657
2658                 if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2659                         continue;
2660
2661                 __set_bit(tid, &tids);
2662         }
2663
2664         switch (cmd) {
2665         case STA_NOTIFY_SLEEP:
2666                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2667                         ieee80211_sta_set_buffered(sta, tid, true);
2668
2669                 if (txqs)
2670                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2671                 /*
2672                  * The fw updates the STA to be asleep. Tx packets on the Tx
2673                  * queues to this station will not be transmitted. The fw will
2674                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2675                  */
2676                 break;
2677         case STA_NOTIFY_AWAKE:
2678                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2679                         break;
2680
2681                 if (txqs)
2682                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2683                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2684                 break;
2685         default:
2686                 break;
2687         }
2688         spin_unlock_bh(&mvmsta->lock);
2689 }
2690
2691 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2692                                    struct ieee80211_vif *vif,
2693                                    enum sta_notify_cmd cmd,
2694                                    struct ieee80211_sta *sta)
2695 {
2696         __iwl_mvm_mac_sta_notify(hw, cmd, sta);
2697 }
2698
2699 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2700 {
2701         struct iwl_rx_packet *pkt = rxb_addr(rxb);
2702         struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2703         struct ieee80211_sta *sta;
2704         struct iwl_mvm_sta *mvmsta;
2705         bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2706
2707         if (WARN_ON(notif->sta_id >= ARRAY_SIZE(mvm->fw_id_to_mac_id)))
2708                 return;
2709
2710         rcu_read_lock();
2711         sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2712         if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2713                 rcu_read_unlock();
2714                 return;
2715         }
2716
2717         mvmsta = iwl_mvm_sta_from_mac80211(sta);
2718
2719         if (!mvmsta->vif ||
2720             mvmsta->vif->type != NL80211_IFTYPE_AP) {
2721                 rcu_read_unlock();
2722                 return;
2723         }
2724
2725         if (mvmsta->sleeping != sleeping) {
2726                 mvmsta->sleeping = sleeping;
2727                 __iwl_mvm_mac_sta_notify(mvm->hw,
2728                         sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2729                         sta);
2730                 ieee80211_sta_ps_transition(sta, sleeping);
2731         }
2732
2733         if (sleeping) {
2734                 switch (notif->type) {
2735                 case IWL_MVM_PM_EVENT_AWAKE:
2736                 case IWL_MVM_PM_EVENT_ASLEEP:
2737                         break;
2738                 case IWL_MVM_PM_EVENT_UAPSD:
2739                         ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2740                         break;
2741                 case IWL_MVM_PM_EVENT_PS_POLL:
2742                         ieee80211_sta_pspoll(sta);
2743                         break;
2744                 default:
2745                         break;
2746                 }
2747         }
2748
2749         rcu_read_unlock();
2750 }
2751
2752 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2753                                        struct ieee80211_vif *vif,
2754                                        struct ieee80211_sta *sta)
2755 {
2756         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2757         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2758
2759         /*
2760          * This is called before mac80211 does RCU synchronisation,
2761          * so here we already invalidate our internal RCU-protected
2762          * station pointer. The rest of the code will thus no longer
2763          * be able to find the station this way, and we don't rely
2764          * on further RCU synchronisation after the sta_state()
2765          * callback deleted the station.
2766          */
2767         mutex_lock(&mvm->mutex);
2768         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2769                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2770                                    ERR_PTR(-ENOENT));
2771
2772         mutex_unlock(&mvm->mutex);
2773 }
2774
2775 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2776                                 const u8 *bssid)
2777 {
2778         int i;
2779
2780         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2781                 struct iwl_mvm_tcm_mac *mdata;
2782
2783                 mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2784                 ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2785                 mdata->opened_rx_ba_sessions = false;
2786         }
2787
2788         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2789                 return;
2790
2791         if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2792                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2793                 return;
2794         }
2795
2796         if (!vif->p2p &&
2797             (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2798                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2799                 return;
2800         }
2801
2802         for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2803                 if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2804                         vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2805                         return;
2806                 }
2807         }
2808
2809         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2810 }
2811
2812 static void
2813 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2814                            struct ieee80211_vif *vif, u8 *peer_addr,
2815                            enum nl80211_tdls_operation action)
2816 {
2817         struct iwl_fw_dbg_trigger_tlv *trig;
2818         struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2819
2820         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TDLS))
2821                 return;
2822
2823         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TDLS);
2824         tdls_trig = (void *)trig->data;
2825         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
2826                                            ieee80211_vif_to_wdev(vif), trig))
2827                 return;
2828
2829         if (!(tdls_trig->action_bitmap & BIT(action)))
2830                 return;
2831
2832         if (tdls_trig->peer_mode &&
2833             memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2834                 return;
2835
2836         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2837                                 "TDLS event occurred, peer %pM, action %d",
2838                                 peer_addr, action);
2839 }
2840
2841 static void iwl_mvm_purge_deferred_tx_frames(struct iwl_mvm *mvm,
2842                                              struct iwl_mvm_sta *mvm_sta)
2843 {
2844         struct iwl_mvm_tid_data *tid_data;
2845         struct sk_buff *skb;
2846         int i;
2847
2848         spin_lock_bh(&mvm_sta->lock);
2849         for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {
2850                 tid_data = &mvm_sta->tid_data[i];
2851
2852                 while ((skb = __skb_dequeue(&tid_data->deferred_tx_frames))) {
2853                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2854
2855                         /*
2856                          * The first deferred frame should've stopped the MAC
2857                          * queues, so we should never get a second deferred
2858                          * frame for the RA/TID.
2859                          */
2860                         iwl_mvm_start_mac_queues(mvm, BIT(info->hw_queue));
2861                         ieee80211_free_txskb(mvm->hw, skb);
2862                 }
2863         }
2864         spin_unlock_bh(&mvm_sta->lock);
2865 }
2866
2867 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2868                                  struct ieee80211_vif *vif,
2869                                  struct ieee80211_sta *sta,
2870                                  enum ieee80211_sta_state old_state,
2871                                  enum ieee80211_sta_state new_state)
2872 {
2873         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2874         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2875         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2876         int ret;
2877
2878         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2879                            sta->addr, old_state, new_state);
2880
2881         /* this would be a mac80211 bug ... but don't crash */
2882         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2883                 return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL;
2884
2885         /*
2886          * If we are in a STA removal flow and in DQA mode:
2887          *
2888          * This is after the sync_rcu part, so the queues have already been
2889          * flushed. No more TXs on their way in mac80211's path, and no more in
2890          * the queues.
2891          * Also, we won't be getting any new TX frames for this station.
2892          * What we might have are deferred TX frames that need to be taken care
2893          * of.
2894          *
2895          * Drop any still-queued deferred-frame before removing the STA, and
2896          * make sure the worker is no longer handling frames for this STA.
2897          */
2898         if (old_state == IEEE80211_STA_NONE &&
2899             new_state == IEEE80211_STA_NOTEXIST) {
2900                 iwl_mvm_purge_deferred_tx_frames(mvm, mvm_sta);
2901                 flush_work(&mvm->add_stream_wk);
2902
2903                 /*
2904                  * No need to make sure deferred TX indication is off since the
2905                  * worker will already remove it if it was on
2906                  */
2907         }
2908
2909         mutex_lock(&mvm->mutex);
2910         /* track whether or not the station is associated */
2911         mvm_sta->sta_state = new_state;
2912
2913         if (old_state == IEEE80211_STA_NOTEXIST &&
2914             new_state == IEEE80211_STA_NONE) {
2915                 /*
2916                  * Firmware bug - it'll crash if the beacon interval is less
2917                  * than 16. We can't avoid connecting at all, so refuse the
2918                  * station state change, this will cause mac80211 to abandon
2919                  * attempts to connect to this AP, and eventually wpa_s will
2920                  * blacklist the AP...
2921                  */
2922                 if (vif->type == NL80211_IFTYPE_STATION &&
2923                     vif->bss_conf.beacon_int < 16) {
2924                         IWL_ERR(mvm,
2925                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2926                                 sta->addr, vif->bss_conf.beacon_int);
2927                         ret = -EINVAL;
2928                         goto out_unlock;
2929                 }
2930
2931                 if (sta->tdls &&
2932                     (vif->p2p ||
2933                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2934                                                 IWL_MVM_TDLS_STA_COUNT ||
2935                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2936                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2937                         ret = -EBUSY;
2938                         goto out_unlock;
2939                 }
2940
2941                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2942                 if (sta->tdls && ret == 0) {
2943                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2944                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2945                                                    NL80211_TDLS_SETUP);
2946                 }
2947         } else if (old_state == IEEE80211_STA_NONE &&
2948                    new_state == IEEE80211_STA_AUTH) {
2949                 /*
2950                  * EBS may be disabled due to previous failures reported by FW.
2951                  * Reset EBS status here assuming environment has been changed.
2952                  */
2953                 mvm->last_ebs_successful = true;
2954                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2955                 ret = 0;
2956         } else if (old_state == IEEE80211_STA_AUTH &&
2957                    new_state == IEEE80211_STA_ASSOC) {
2958                 if (vif->type == NL80211_IFTYPE_AP) {
2959                         mvmvif->ap_assoc_sta_count++;
2960                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2961                 }
2962
2963                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2964                                      false);
2965                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2966         } else if (old_state == IEEE80211_STA_ASSOC &&
2967                    new_state == IEEE80211_STA_AUTHORIZED) {
2968
2969                 /* we don't support TDLS during DCM */
2970                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2971                         iwl_mvm_teardown_tdls_peers(mvm);
2972
2973                 if (sta->tdls)
2974                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
2975                                                    NL80211_TDLS_ENABLE_LINK);
2976
2977                 /* enable beacon filtering */
2978                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2979
2980                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
2981                                      true);
2982
2983                 ret = 0;
2984         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2985                    new_state == IEEE80211_STA_ASSOC) {
2986                 /* disable beacon filtering */
2987                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2988                 ret = 0;
2989         } else if (old_state == IEEE80211_STA_ASSOC &&
2990                    new_state == IEEE80211_STA_AUTH) {
2991                 if (vif->type == NL80211_IFTYPE_AP) {
2992                         mvmvif->ap_assoc_sta_count--;
2993                         iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2994                 }
2995                 ret = 0;
2996         } else if (old_state == IEEE80211_STA_AUTH &&
2997                    new_state == IEEE80211_STA_NONE) {
2998                 ret = 0;
2999         } else if (old_state == IEEE80211_STA_NONE &&
3000                    new_state == IEEE80211_STA_NOTEXIST) {
3001                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
3002                 if (sta->tdls) {
3003                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
3004                         iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3005                                                    NL80211_TDLS_DISABLE_LINK);
3006                 }
3007         } else {
3008                 ret = -EIO;
3009         }
3010  out_unlock:
3011         mutex_unlock(&mvm->mutex);
3012
3013         if (sta->tdls && ret == 0) {
3014                 if (old_state == IEEE80211_STA_NOTEXIST &&
3015                     new_state == IEEE80211_STA_NONE)
3016                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3017                 else if (old_state == IEEE80211_STA_NONE &&
3018                          new_state == IEEE80211_STA_NOTEXIST)
3019                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3020         }
3021
3022         return ret;
3023 }
3024
3025 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3026 {
3027         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3028
3029         mvm->rts_threshold = value;
3030
3031         return 0;
3032 }
3033
3034 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3035                                   struct ieee80211_vif *vif,
3036                                   struct ieee80211_sta *sta, u32 changed)
3037 {
3038         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3039
3040         if (vif->type == NL80211_IFTYPE_STATION &&
3041             changed & IEEE80211_RC_NSS_CHANGED)
3042                 iwl_mvm_sf_update(mvm, vif, false);
3043 }
3044
3045 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3046                                struct ieee80211_vif *vif, u16 ac,
3047                                const struct ieee80211_tx_queue_params *params)
3048 {
3049         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3050         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3051
3052         mvmvif->queue_params[ac] = *params;
3053
3054         /*
3055          * No need to update right away, we'll get BSS_CHANGED_QOS
3056          * The exception is P2P_DEVICE interface which needs immediate update.
3057          */
3058         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3059                 int ret;
3060
3061                 mutex_lock(&mvm->mutex);
3062                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3063                 mutex_unlock(&mvm->mutex);
3064                 return ret;
3065         }
3066         return 0;
3067 }
3068
3069 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3070                                        struct ieee80211_vif *vif,
3071                                        u16 req_duration)
3072 {
3073         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3074         u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
3075         u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
3076
3077         /*
3078          * iwl_mvm_protect_session() reads directly from the device
3079          * (the system time), so make sure it is available.
3080          */
3081         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
3082                 return;
3083
3084         if (req_duration > duration)
3085                 duration = req_duration;
3086
3087         mutex_lock(&mvm->mutex);
3088         /* Try really hard to protect the session and hear a beacon */
3089         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
3090         mutex_unlock(&mvm->mutex);
3091
3092         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
3093 }
3094
3095 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3096                                         struct ieee80211_vif *vif,
3097                                         struct cfg80211_sched_scan_request *req,
3098                                         struct ieee80211_scan_ies *ies)
3099 {
3100         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3101
3102         int ret;
3103
3104         mutex_lock(&mvm->mutex);
3105
3106         if (!vif->bss_conf.idle) {
3107                 ret = -EBUSY;
3108                 goto out;
3109         }
3110
3111         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3112
3113 out:
3114         mutex_unlock(&mvm->mutex);
3115         return ret;
3116 }
3117
3118 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3119                                        struct ieee80211_vif *vif)
3120 {
3121         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3122         int ret;
3123
3124         mutex_lock(&mvm->mutex);
3125
3126         /* Due to a race condition, it's possible that mac80211 asks
3127          * us to stop a sched_scan when it's already stopped.  This
3128          * can happen, for instance, if we stopped the scan ourselves,
3129          * called ieee80211_sched_scan_stopped() and the userspace called
3130          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3131          * could run.  To handle this, simply return if the scan is
3132          * not running.
3133         */
3134         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3135                 mutex_unlock(&mvm->mutex);
3136                 return 0;
3137         }
3138
3139         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3140         mutex_unlock(&mvm->mutex);
3141         iwl_mvm_wait_for_async_handlers(mvm);
3142
3143         return ret;
3144 }
3145
3146 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3147                                enum set_key_cmd cmd,
3148                                struct ieee80211_vif *vif,
3149                                struct ieee80211_sta *sta,
3150                                struct ieee80211_key_conf *key)
3151 {
3152         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3153         struct iwl_mvm_sta *mvmsta;
3154         struct iwl_mvm_key_pn *ptk_pn;
3155         int keyidx = key->keyidx;
3156         int ret;
3157         u8 key_offset;
3158
3159         if (iwlwifi_mod_params.swcrypto) {
3160                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
3161                 return -EOPNOTSUPP;
3162         }
3163
3164         switch (key->cipher) {
3165         case WLAN_CIPHER_SUITE_TKIP:
3166                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3167                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3168                 break;
3169         case WLAN_CIPHER_SUITE_CCMP:
3170         case WLAN_CIPHER_SUITE_GCMP:
3171         case WLAN_CIPHER_SUITE_GCMP_256:
3172                 if (!iwl_mvm_has_new_tx_api(mvm))
3173                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3174                 break;
3175         case WLAN_CIPHER_SUITE_AES_CMAC:
3176         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3177         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3178                 WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3179                 break;
3180         case WLAN_CIPHER_SUITE_WEP40:
3181         case WLAN_CIPHER_SUITE_WEP104:
3182                 /* For non-client mode, only use WEP keys for TX as we probably
3183                  * don't have a station yet anyway and would then have to keep
3184                  * track of the keys, linking them to each of the clients/peers
3185                  * as they appear. For now, don't do that, for performance WEP
3186                  * offload doesn't really matter much, but we need it for some
3187                  * other offload features in client mode.
3188                  */
3189                 if (vif->type != NL80211_IFTYPE_STATION)
3190                         return 0;
3191                 break;
3192         default:
3193                 /* currently FW supports only one optional cipher scheme */
3194                 if (hw->n_cipher_schemes &&
3195                     hw->cipher_schemes->cipher == key->cipher)
3196                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3197                 else
3198                         return -EOPNOTSUPP;
3199         }
3200
3201         mutex_lock(&mvm->mutex);
3202
3203         switch (cmd) {
3204         case SET_KEY:
3205                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
3206                      vif->type == NL80211_IFTYPE_AP) && !sta) {
3207                         /*
3208                          * GTK on AP interface is a TX-only key, return 0;
3209                          * on IBSS they're per-station and because we're lazy
3210                          * we don't support them for RX, so do the same.
3211                          * CMAC/GMAC in AP/IBSS modes must be done in software.
3212                          */
3213                         if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3214                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3215                             key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)
3216                                 ret = -EOPNOTSUPP;
3217                         else
3218                                 ret = 0;
3219
3220                         if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3221                             key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3222                             !iwl_mvm_has_new_tx_api(mvm)) {
3223                                 key->hw_key_idx = STA_KEY_IDX_INVALID;
3224                                 break;
3225                         }
3226                 }
3227
3228                 /* During FW restart, in order to restore the state as it was,
3229                  * don't try to reprogram keys we previously failed for.
3230                  */
3231                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3232                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
3233                         IWL_DEBUG_MAC80211(mvm,
3234                                            "skip invalid idx key programming during restart\n");
3235                         ret = 0;
3236                         break;
3237                 }
3238
3239                 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3240                     sta && iwl_mvm_has_new_rx_api(mvm) &&
3241                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3242                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3243                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3244                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3245                         struct ieee80211_key_seq seq;
3246                         int tid, q;
3247
3248                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3249                         WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3250                         ptk_pn = kzalloc(struct_size(ptk_pn, q,
3251                                                      mvm->trans->num_rx_queues),
3252                                          GFP_KERNEL);
3253                         if (!ptk_pn) {
3254                                 ret = -ENOMEM;
3255                                 break;
3256                         }
3257
3258                         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3259                                 ieee80211_get_key_rx_seq(key, tid, &seq);
3260                                 for (q = 0; q < mvm->trans->num_rx_queues; q++)
3261                                         memcpy(ptk_pn->q[q].pn[tid],
3262                                                seq.ccmp.pn,
3263                                                IEEE80211_CCMP_PN_LEN);
3264                         }
3265
3266                         rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3267                 }
3268
3269                 /* in HW restart reuse the index, otherwise request a new one */
3270                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3271                         key_offset = key->hw_key_idx;
3272                 else
3273                         key_offset = STA_KEY_IDX_INVALID;
3274
3275                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3276                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3277                 if (ret) {
3278                         IWL_WARN(mvm, "set key failed\n");
3279                         /*
3280                          * can't add key for RX, but we don't need it
3281                          * in the device for TX so still return 0
3282                          */
3283                         key->hw_key_idx = STA_KEY_IDX_INVALID;
3284                         ret = 0;
3285                 }
3286
3287                 break;
3288         case DISABLE_KEY:
3289                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3290                         ret = 0;
3291                         break;
3292                 }
3293
3294                 if (sta && iwl_mvm_has_new_rx_api(mvm) &&
3295                     key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3296                     (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3297                      key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3298                      key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3299                         mvmsta = iwl_mvm_sta_from_mac80211(sta);
3300                         ptk_pn = rcu_dereference_protected(
3301                                                 mvmsta->ptk_pn[keyidx],
3302                                                 lockdep_is_held(&mvm->mutex));
3303                         RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3304                         if (ptk_pn)
3305                                 kfree_rcu(ptk_pn, rcu_head);
3306                 }
3307
3308                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3309                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3310                 break;
3311         default:
3312                 ret = -EINVAL;
3313         }
3314
3315         mutex_unlock(&mvm->mutex);
3316         return ret;
3317 }
3318
3319 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3320                                         struct ieee80211_vif *vif,
3321                                         struct ieee80211_key_conf *keyconf,
3322                                         struct ieee80211_sta *sta,
3323                                         u32 iv32, u16 *phase1key)
3324 {
3325         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3326
3327         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3328                 return;
3329
3330         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3331 }
3332
3333
3334 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3335                                struct iwl_rx_packet *pkt, void *data)
3336 {
3337         struct iwl_mvm *mvm =
3338                 container_of(notif_wait, struct iwl_mvm, notif_wait);
3339         struct iwl_hs20_roc_res *resp;
3340         int resp_len = iwl_rx_packet_payload_len(pkt);
3341         struct iwl_mvm_time_event_data *te_data = data;
3342
3343         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3344                 return true;
3345
3346         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3347                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3348                 return true;
3349         }
3350
3351         resp = (void *)pkt->data;
3352
3353         IWL_DEBUG_TE(mvm,
3354                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3355                      resp->status, resp->event_unique_id);
3356
3357         te_data->uid = le32_to_cpu(resp->event_unique_id);
3358         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3359                      te_data->uid);
3360
3361         spin_lock_bh(&mvm->time_event_lock);
3362         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3363         spin_unlock_bh(&mvm->time_event_lock);
3364
3365         return true;
3366 }
3367
3368 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3369 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3370 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3371 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3372 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
3373 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3374                                     struct ieee80211_channel *channel,
3375                                     struct ieee80211_vif *vif,
3376                                     int duration)
3377 {
3378         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3379         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3380         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3381         static const u16 time_event_response[] = { HOT_SPOT_CMD };
3382         struct iwl_notification_wait wait_time_event;
3383         u32 dtim_interval = vif->bss_conf.dtim_period *
3384                 vif->bss_conf.beacon_int;
3385         u32 req_dur, delay;
3386         struct iwl_hs20_roc_req aux_roc_req = {
3387                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3388                 .id_and_color =
3389                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3390                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3391                 /* Set the channel info data */
3392                 .channel_info.band = (channel->band == NL80211_BAND_2GHZ) ?
3393                         PHY_BAND_24 : PHY_BAND_5,
3394                 .channel_info.channel = channel->hw_value,
3395                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3396                 /* Set the time and duration */
3397                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3398          };
3399
3400         delay = AUX_ROC_MIN_DELAY;
3401         req_dur = MSEC_TO_TU(duration);
3402
3403         /*
3404          * If we are associated we want the delay time to be at least one
3405          * dtim interval so that the FW can wait until after the DTIM and
3406          * then start the time event, this will potentially allow us to
3407          * remain off-channel for the max duration.
3408          * Since we want to use almost a whole dtim interval we would also
3409          * like the delay to be for 2-3 dtim intervals, in case there are
3410          * other time events with higher priority.
3411          */
3412         if (vif->bss_conf.assoc) {
3413                 delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3414                 /* We cannot remain off-channel longer than the DTIM interval */
3415                 if (dtim_interval <= req_dur) {
3416                         req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3417                         if (req_dur <= AUX_ROC_MIN_DURATION)
3418                                 req_dur = dtim_interval -
3419                                         AUX_ROC_MIN_SAFETY_BUFFER;
3420                 }
3421         }
3422
3423         aux_roc_req.duration = cpu_to_le32(req_dur);
3424         aux_roc_req.apply_time_max_delay = cpu_to_le32(delay);
3425
3426         IWL_DEBUG_TE(mvm,
3427                      "ROC: Requesting to remain on channel %u for %ums\n",
3428                      channel->hw_value, req_dur);
3429         IWL_DEBUG_TE(mvm,
3430                      "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3431                      duration, delay, dtim_interval);
3432
3433         /* Set the node address */
3434         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3435
3436         lockdep_assert_held(&mvm->mutex);
3437
3438         spin_lock_bh(&mvm->time_event_lock);
3439
3440         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3441                 spin_unlock_bh(&mvm->time_event_lock);
3442                 return -EIO;
3443         }
3444
3445         te_data->vif = vif;
3446         te_data->duration = duration;
3447         te_data->id = HOT_SPOT_CMD;
3448
3449         spin_unlock_bh(&mvm->time_event_lock);
3450
3451         /*
3452          * Use a notification wait, which really just processes the
3453          * command response and doesn't wait for anything, in order
3454          * to be able to process the response and get the UID inside
3455          * the RX path. Using CMD_WANT_SKB doesn't work because it
3456          * stores the buffer and then wakes up this thread, by which
3457          * time another notification (that the time event started)
3458          * might already be processed unsuccessfully.
3459          */
3460         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3461                                    time_event_response,
3462                                    ARRAY_SIZE(time_event_response),
3463                                    iwl_mvm_rx_aux_roc, te_data);
3464
3465         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3466                                    &aux_roc_req);
3467
3468         if (res) {
3469                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3470                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3471                 goto out_clear_te;
3472         }
3473
3474         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3475         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3476         /* should never fail */
3477         WARN_ON_ONCE(res);
3478
3479         if (res) {
3480  out_clear_te:
3481                 spin_lock_bh(&mvm->time_event_lock);
3482                 iwl_mvm_te_clear_data(mvm, te_data);
3483                 spin_unlock_bh(&mvm->time_event_lock);
3484         }
3485
3486         return res;
3487 }
3488
3489 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3490                        struct ieee80211_vif *vif,
3491                        struct ieee80211_channel *channel,
3492                        int duration,
3493                        enum ieee80211_roc_type type)
3494 {
3495         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3496         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3497         struct cfg80211_chan_def chandef;
3498         struct iwl_mvm_phy_ctxt *phy_ctxt;
3499         bool band_change_removal;
3500         int ret, i;
3501
3502         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3503                            duration, type);
3504
3505         /*
3506          * Flush the done work, just in case it's still pending, so that
3507          * the work it does can complete and we can accept new frames.
3508          */
3509         flush_work(&mvm->roc_done_wk);
3510
3511         mutex_lock(&mvm->mutex);
3512
3513         switch (vif->type) {
3514         case NL80211_IFTYPE_STATION:
3515                 if (fw_has_capa(&mvm->fw->ucode_capa,
3516                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3517                         /* Use aux roc framework (HS20) */
3518                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3519                                                        vif, duration);
3520                         goto out_unlock;
3521                 }
3522                 IWL_ERR(mvm, "hotspot not supported\n");
3523                 ret = -EINVAL;
3524                 goto out_unlock;
3525         case NL80211_IFTYPE_P2P_DEVICE:
3526                 /* handle below */
3527                 break;
3528         default:
3529                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3530                 ret = -EINVAL;
3531                 goto out_unlock;
3532         }
3533
3534         for (i = 0; i < NUM_PHY_CTX; i++) {
3535                 phy_ctxt = &mvm->phy_ctxts[i];
3536                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3537                         continue;
3538
3539                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3540                         /*
3541                          * Unbind the P2P_DEVICE from the current PHY context,
3542                          * and if the PHY context is not used remove it.
3543                          */
3544                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3545                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3546                                 goto out_unlock;
3547
3548                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3549
3550                         /* Bind the P2P_DEVICE to the current PHY Context */
3551                         mvmvif->phy_ctxt = phy_ctxt;
3552
3553                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3554                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3555                                 goto out_unlock;
3556
3557                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3558                         goto schedule_time_event;
3559                 }
3560         }
3561
3562         /* Need to update the PHY context only if the ROC channel changed */
3563         if (channel == mvmvif->phy_ctxt->channel)
3564                 goto schedule_time_event;
3565
3566         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3567
3568         /*
3569          * Check if the remain-on-channel is on a different band and that
3570          * requires context removal, see iwl_mvm_phy_ctxt_changed(). If
3571          * so, we'll need to release and then re-configure here, since we
3572          * must not remove a PHY context that's part of a binding.
3573          */
3574         band_change_removal =
3575                 fw_has_capa(&mvm->fw->ucode_capa,
3576                             IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
3577                 mvmvif->phy_ctxt->channel->band != chandef.chan->band;
3578
3579         if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) {
3580                 /*
3581                  * Change the PHY context configuration as it is currently
3582                  * referenced only by the P2P Device MAC (and we can modify it)
3583                  */
3584                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3585                                                &chandef, 1, 1);
3586                 if (ret)
3587                         goto out_unlock;
3588         } else {
3589                 /*
3590                  * The PHY context is shared with other MACs (or we're trying to
3591                  * switch bands), so remove the P2P Device from the binding,
3592                  * allocate an new PHY context and create a new binding.
3593                  */
3594                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3595                 if (!phy_ctxt) {
3596                         ret = -ENOSPC;
3597                         goto out_unlock;
3598                 }
3599
3600                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3601                                                1, 1);
3602                 if (ret) {
3603                         IWL_ERR(mvm, "Failed to change PHY context\n");
3604                         goto out_unlock;
3605                 }
3606
3607                 /* Unbind the P2P_DEVICE from the current PHY context */
3608                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3609                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3610                         goto out_unlock;
3611
3612                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3613
3614                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3615                 mvmvif->phy_ctxt = phy_ctxt;
3616
3617                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3618                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3619                         goto out_unlock;
3620
3621                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3622         }
3623
3624 schedule_time_event:
3625         /* Schedule the time events */
3626         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3627
3628 out_unlock:
3629         mutex_unlock(&mvm->mutex);
3630         IWL_DEBUG_MAC80211(mvm, "leave\n");
3631         return ret;
3632 }
3633
3634 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3635 {
3636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3637
3638         IWL_DEBUG_MAC80211(mvm, "enter\n");
3639
3640         mutex_lock(&mvm->mutex);
3641         iwl_mvm_stop_roc(mvm);
3642         mutex_unlock(&mvm->mutex);
3643
3644         IWL_DEBUG_MAC80211(mvm, "leave\n");
3645         return 0;
3646 }
3647
3648 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3649                                  struct ieee80211_chanctx_conf *ctx)
3650 {
3651         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3652         struct iwl_mvm_phy_ctxt *phy_ctxt;
3653         int ret;
3654
3655         lockdep_assert_held(&mvm->mutex);
3656
3657         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3658
3659         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3660         if (!phy_ctxt) {
3661                 ret = -ENOSPC;
3662                 goto out;
3663         }
3664
3665         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3666                                        ctx->rx_chains_static,
3667                                        ctx->rx_chains_dynamic);
3668         if (ret) {
3669                 IWL_ERR(mvm, "Failed to add PHY context\n");
3670                 goto out;
3671         }
3672
3673         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3674         *phy_ctxt_id = phy_ctxt->id;
3675 out:
3676         return ret;
3677 }
3678
3679 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3680                                struct ieee80211_chanctx_conf *ctx)
3681 {
3682         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3683         int ret;
3684
3685         mutex_lock(&mvm->mutex);
3686         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3687         mutex_unlock(&mvm->mutex);
3688
3689         return ret;
3690 }
3691
3692 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3693                                      struct ieee80211_chanctx_conf *ctx)
3694 {
3695         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3696         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3697
3698         lockdep_assert_held(&mvm->mutex);
3699
3700         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3701 }
3702
3703 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3704                                    struct ieee80211_chanctx_conf *ctx)
3705 {
3706         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3707
3708         mutex_lock(&mvm->mutex);
3709         __iwl_mvm_remove_chanctx(mvm, ctx);
3710         mutex_unlock(&mvm->mutex);
3711 }
3712
3713 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3714                                    struct ieee80211_chanctx_conf *ctx,
3715                                    u32 changed)
3716 {
3717         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3718         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3719         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3720
3721         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3722                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3723                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3724                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3725                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3726                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3727                       phy_ctxt->ref, changed))
3728                 return;
3729
3730         mutex_lock(&mvm->mutex);
3731
3732         /* we are only changing the min_width, may be a noop */
3733         if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
3734                 if (phy_ctxt->width == ctx->min_def.width)
3735                         goto out_unlock;
3736
3737                 /* we are just toggling between 20_NOHT and 20 */
3738                 if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
3739                     ctx->min_def.width <= NL80211_CHAN_WIDTH_20)
3740                         goto out_unlock;
3741         }
3742
3743         iwl_mvm_bt_coex_vif_change(mvm);
3744         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3745                                  ctx->rx_chains_static,
3746                                  ctx->rx_chains_dynamic);
3747
3748 out_unlock:
3749         mutex_unlock(&mvm->mutex);
3750 }
3751
3752 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3753                                         struct ieee80211_vif *vif,
3754                                         struct ieee80211_chanctx_conf *ctx,
3755                                         bool switching_chanctx)
3756 {
3757         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3758         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3759         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3760         int ret;
3761
3762         lockdep_assert_held(&mvm->mutex);
3763
3764         mvmvif->phy_ctxt = phy_ctxt;
3765
3766         switch (vif->type) {
3767         case NL80211_IFTYPE_AP:
3768                 /* only needed if we're switching chanctx (i.e. during CSA) */
3769                 if (switching_chanctx) {
3770                         mvmvif->ap_ibss_active = true;
3771                         break;
3772                 }
3773         case NL80211_IFTYPE_ADHOC:
3774                 /*
3775                  * The AP binding flow is handled as part of the start_ap flow
3776                  * (in bss_info_changed), similarly for IBSS.
3777                  */
3778                 ret = 0;
3779                 goto out;
3780         case NL80211_IFTYPE_STATION:
3781                 mvmvif->csa_bcn_pending = false;
3782                 break;
3783         case NL80211_IFTYPE_MONITOR:
3784                 /* always disable PS when a monitor interface is active */
3785                 mvmvif->ps_disabled = true;
3786                 break;
3787         default:
3788                 ret = -EINVAL;
3789                 goto out;
3790         }
3791
3792         ret = iwl_mvm_binding_add_vif(mvm, vif);
3793         if (ret)
3794                 goto out;
3795
3796         /*
3797          * Power state must be updated before quotas,
3798          * otherwise fw will complain.
3799          */
3800         iwl_mvm_power_update_mac(mvm);
3801
3802         /* Setting the quota at this stage is only required for monitor
3803          * interfaces. For the other types, the bss_info changed flow
3804          * will handle quota settings.
3805          */
3806         if (vif->type == NL80211_IFTYPE_MONITOR) {
3807                 mvmvif->monitor_active = true;
3808                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3809                 if (ret)
3810                         goto out_remove_binding;
3811
3812                 ret = iwl_mvm_add_snif_sta(mvm, vif);
3813                 if (ret)
3814                         goto out_remove_binding;
3815
3816         }
3817
3818         /* Handle binding during CSA */
3819         if (vif->type == NL80211_IFTYPE_AP) {
3820                 iwl_mvm_update_quotas(mvm, false, NULL);
3821                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3822         }
3823
3824         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3825                 u32 duration = 3 * vif->bss_conf.beacon_int;
3826
3827                 /* iwl_mvm_protect_session() reads directly from the
3828                  * device (the system time), so make sure it is
3829                  * available.
3830                  */
3831                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3832                 if (ret)
3833                         goto out_remove_binding;
3834
3835                 /* Protect the session to make sure we hear the first
3836                  * beacon on the new channel.
3837                  */
3838                 mvmvif->csa_bcn_pending = true;
3839                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3840                                         vif->bss_conf.beacon_int / 2,
3841                                         true);
3842
3843                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3844
3845                 iwl_mvm_update_quotas(mvm, false, NULL);
3846         }
3847
3848         goto out;
3849
3850 out_remove_binding:
3851         iwl_mvm_binding_remove_vif(mvm, vif);
3852         iwl_mvm_power_update_mac(mvm);
3853 out:
3854         if (ret)
3855                 mvmvif->phy_ctxt = NULL;
3856         return ret;
3857 }
3858 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3859                                       struct ieee80211_vif *vif,
3860                                       struct ieee80211_chanctx_conf *ctx)
3861 {
3862         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3863         int ret;
3864
3865         mutex_lock(&mvm->mutex);
3866         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3867         mutex_unlock(&mvm->mutex);
3868
3869         return ret;
3870 }
3871
3872 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3873                                            struct ieee80211_vif *vif,
3874                                            struct ieee80211_chanctx_conf *ctx,
3875                                            bool switching_chanctx)
3876 {
3877         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3878         struct ieee80211_vif *disabled_vif = NULL;
3879
3880         lockdep_assert_held(&mvm->mutex);
3881
3882         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3883
3884         switch (vif->type) {
3885         case NL80211_IFTYPE_ADHOC:
3886                 goto out;
3887         case NL80211_IFTYPE_MONITOR:
3888                 mvmvif->monitor_active = false;
3889                 mvmvif->ps_disabled = false;
3890                 iwl_mvm_rm_snif_sta(mvm, vif);
3891                 break;
3892         case NL80211_IFTYPE_AP:
3893                 /* This part is triggered only during CSA */
3894                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3895                         goto out;
3896
3897                 mvmvif->csa_countdown = false;
3898
3899                 /* Set CS bit on all the stations */
3900                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3901
3902                 /* Save blocked iface, the timeout is set on the next beacon */
3903                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3904
3905                 mvmvif->ap_ibss_active = false;
3906                 break;
3907         case NL80211_IFTYPE_STATION:
3908                 if (!switching_chanctx)
3909                         break;
3910
3911                 disabled_vif = vif;
3912
3913                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3914                 break;
3915         default:
3916                 break;
3917         }
3918
3919         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3920         iwl_mvm_binding_remove_vif(mvm, vif);
3921
3922 out:
3923         mvmvif->phy_ctxt = NULL;
3924         iwl_mvm_power_update_mac(mvm);
3925 }
3926
3927 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3928                                          struct ieee80211_vif *vif,
3929                                          struct ieee80211_chanctx_conf *ctx)
3930 {
3931         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3932
3933         mutex_lock(&mvm->mutex);
3934         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3935         mutex_unlock(&mvm->mutex);
3936 }
3937
3938 static int
3939 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3940                                 struct ieee80211_vif_chanctx_switch *vifs)
3941 {
3942         int ret;
3943
3944         mutex_lock(&mvm->mutex);
3945         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3946         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3947
3948         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3949         if (ret) {
3950                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3951                 goto out_reassign;
3952         }
3953
3954         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3955                                            true);
3956         if (ret) {
3957                 IWL_ERR(mvm,
3958                         "failed to assign new_ctx during channel switch\n");
3959                 goto out_remove;
3960         }
3961
3962         /* we don't support TDLS during DCM - can be caused by channel switch */
3963         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3964                 iwl_mvm_teardown_tdls_peers(mvm);
3965
3966         goto out;
3967
3968 out_remove:
3969         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3970
3971 out_reassign:
3972         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3973                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3974                 goto out_restart;
3975         }
3976
3977         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3978                                          true)) {
3979                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3980                 goto out_restart;
3981         }
3982
3983         goto out;
3984
3985 out_restart:
3986         /* things keep failing, better restart the hw */
3987         iwl_mvm_nic_restart(mvm, false);
3988
3989 out:
3990         mutex_unlock(&mvm->mutex);
3991
3992         return ret;
3993 }
3994
3995 static int
3996 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3997                                     struct ieee80211_vif_chanctx_switch *vifs)
3998 {
3999         int ret;
4000
4001         mutex_lock(&mvm->mutex);
4002         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4003
4004         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4005                                            true);
4006         if (ret) {
4007                 IWL_ERR(mvm,
4008                         "failed to assign new_ctx during channel switch\n");
4009                 goto out_reassign;
4010         }
4011
4012         goto out;
4013
4014 out_reassign:
4015         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4016                                          true)) {
4017                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4018                 goto out_restart;
4019         }
4020
4021         goto out;
4022
4023 out_restart:
4024         /* things keep failing, better restart the hw */
4025         iwl_mvm_nic_restart(mvm, false);
4026
4027 out:
4028         mutex_unlock(&mvm->mutex);
4029
4030         return ret;
4031 }
4032
4033 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4034                                       struct ieee80211_vif_chanctx_switch *vifs,
4035                                       int n_vifs,
4036                                       enum ieee80211_chanctx_switch_mode mode)
4037 {
4038         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4039         int ret;
4040
4041         /* we only support a single-vif right now */
4042         if (n_vifs > 1)
4043                 return -EOPNOTSUPP;
4044
4045         switch (mode) {
4046         case CHANCTX_SWMODE_SWAP_CONTEXTS:
4047                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4048                 break;
4049         case CHANCTX_SWMODE_REASSIGN_VIF:
4050                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4051                 break;
4052         default:
4053                 ret = -EOPNOTSUPP;
4054                 break;
4055         }
4056
4057         return ret;
4058 }
4059
4060 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4061 {
4062         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4063
4064         return mvm->ibss_manager;
4065 }
4066
4067 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4068                            struct ieee80211_sta *sta,
4069                            bool set)
4070 {
4071         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4072         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4073
4074         if (!mvm_sta || !mvm_sta->vif) {
4075                 IWL_ERR(mvm, "Station is not associated to a vif\n");
4076                 return -EINVAL;
4077         }
4078
4079         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4080 }
4081
4082 #ifdef CONFIG_NL80211_TESTMODE
4083 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4084         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4085         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4086         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4087 };
4088
4089 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4090                                       struct ieee80211_vif *vif,
4091                                       void *data, int len)
4092 {
4093         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4094         int err;
4095         u32 noa_duration;
4096
4097         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy,
4098                         NULL);
4099         if (err)
4100                 return err;
4101
4102         if (!tb[IWL_MVM_TM_ATTR_CMD])
4103                 return -EINVAL;
4104
4105         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4106         case IWL_MVM_TM_CMD_SET_NOA:
4107                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4108                     !vif->bss_conf.enable_beacon ||
4109                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4110                         return -EINVAL;
4111
4112                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4113                 if (noa_duration >= vif->bss_conf.beacon_int)
4114                         return -EINVAL;
4115
4116                 mvm->noa_duration = noa_duration;
4117                 mvm->noa_vif = vif;
4118
4119                 return iwl_mvm_update_quotas(mvm, true, NULL);
4120         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4121                 /* must be associated client vif - ignore authorized */
4122                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4123                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
4124                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4125                         return -EINVAL;
4126
4127                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4128                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4129                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4130         }
4131
4132         return -EOPNOTSUPP;
4133 }
4134
4135 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4136                                     struct ieee80211_vif *vif,
4137                                     void *data, int len)
4138 {
4139         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4140         int err;
4141
4142         mutex_lock(&mvm->mutex);
4143         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4144         mutex_unlock(&mvm->mutex);
4145
4146         return err;
4147 }
4148 #endif
4149
4150 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4151                                    struct ieee80211_vif *vif,
4152                                    struct ieee80211_channel_switch *chsw)
4153 {
4154         /* By implementing this operation, we prevent mac80211 from
4155          * starting its own channel switch timer, so that we can call
4156          * ieee80211_chswitch_done() ourselves at the right time
4157          * (which is when the absence time event starts).
4158          */
4159
4160         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4161                            "dummy channel switch op\n");
4162 }
4163
4164 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4165                                       struct ieee80211_vif *vif,
4166                                       struct ieee80211_channel_switch *chsw)
4167 {
4168         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4169         struct ieee80211_vif *csa_vif;
4170         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4171         u32 apply_time;
4172         int ret;
4173
4174         mutex_lock(&mvm->mutex);
4175
4176         mvmvif->csa_failed = false;
4177
4178         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4179                            chsw->chandef.center_freq1);
4180
4181         iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4182                                        ieee80211_vif_to_wdev(vif),
4183                                        FW_DBG_TRIGGER_CHANNEL_SWITCH);
4184
4185         switch (vif->type) {
4186         case NL80211_IFTYPE_AP:
4187                 csa_vif =
4188                         rcu_dereference_protected(mvm->csa_vif,
4189                                                   lockdep_is_held(&mvm->mutex));
4190                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
4191                               "Another CSA is already in progress")) {
4192                         ret = -EBUSY;
4193                         goto out_unlock;
4194                 }
4195
4196                 /* we still didn't unblock tx. prevent new CS meanwhile */
4197                 if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4198                                               lockdep_is_held(&mvm->mutex))) {
4199                         ret = -EBUSY;
4200                         goto out_unlock;
4201                 }
4202
4203                 rcu_assign_pointer(mvm->csa_vif, vif);
4204
4205                 if (WARN_ONCE(mvmvif->csa_countdown,
4206                               "Previous CSA countdown didn't complete")) {
4207                         ret = -EBUSY;
4208                         goto out_unlock;
4209                 }
4210
4211                 mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4212
4213                 break;
4214         case NL80211_IFTYPE_STATION:
4215                 /* Schedule the time event to a bit before beacon 1,
4216                  * to make sure we're in the new channel when the
4217                  * GO/AP arrives. In case count <= 1 immediately schedule the
4218                  * TE (this might result with some packet loss or connection
4219                  * loss).
4220                  */
4221                 if (chsw->count <= 1)
4222                         apply_time = 0;
4223                 else
4224                         apply_time = chsw->device_timestamp +
4225                                 ((vif->bss_conf.beacon_int * (chsw->count - 1) -
4226                                   IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4227
4228                 if (chsw->block_tx)
4229                         iwl_mvm_csa_client_absent(mvm, vif);
4230
4231                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4232                                             apply_time);
4233                 if (mvmvif->bf_data.bf_enabled) {
4234                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4235                         if (ret)
4236                                 goto out_unlock;
4237                 }
4238
4239                 break;
4240         default:
4241                 break;
4242         }
4243
4244         mvmvif->ps_disabled = true;
4245
4246         ret = iwl_mvm_power_update_ps(mvm);
4247         if (ret)
4248                 goto out_unlock;
4249
4250         /* we won't be on this channel any longer */
4251         iwl_mvm_teardown_tdls_peers(mvm);
4252
4253 out_unlock:
4254         mutex_unlock(&mvm->mutex);
4255
4256         return ret;
4257 }
4258
4259 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
4260                                        struct ieee80211_vif *vif)
4261 {
4262         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4263         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4264         int ret;
4265
4266         mutex_lock(&mvm->mutex);
4267
4268         if (mvmvif->csa_failed) {
4269                 mvmvif->csa_failed = false;
4270                 ret = -EIO;
4271                 goto out_unlock;
4272         }
4273
4274         if (vif->type == NL80211_IFTYPE_STATION) {
4275                 struct iwl_mvm_sta *mvmsta;
4276
4277                 mvmvif->csa_bcn_pending = false;
4278                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
4279                                                           mvmvif->ap_sta_id);
4280
4281                 if (WARN_ON(!mvmsta)) {
4282                         ret = -EIO;
4283                         goto out_unlock;
4284                 }
4285
4286                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
4287
4288                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4289
4290                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4291                 if (ret)
4292                         goto out_unlock;
4293
4294                 iwl_mvm_stop_session_protection(mvm, vif);
4295         }
4296
4297         mvmvif->ps_disabled = false;
4298
4299         ret = iwl_mvm_power_update_ps(mvm);
4300
4301 out_unlock:
4302         mutex_unlock(&mvm->mutex);
4303
4304         return ret;
4305 }
4306
4307 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4308 {
4309         int i;
4310
4311         if (!iwl_mvm_has_new_tx_api(mvm)) {
4312                 if (drop) {
4313                         mutex_lock(&mvm->mutex);
4314                         iwl_mvm_flush_tx_path(mvm,
4315                                 iwl_mvm_flushable_queues(mvm) & queues, 0);
4316                         mutex_unlock(&mvm->mutex);
4317                 } else {
4318                         iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4319                 }
4320                 return;
4321         }
4322
4323         mutex_lock(&mvm->mutex);
4324         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4325                 struct ieee80211_sta *sta;
4326
4327                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4328                                                 lockdep_is_held(&mvm->mutex));
4329                 if (IS_ERR_OR_NULL(sta))
4330                         continue;
4331
4332                 if (drop)
4333                         iwl_mvm_flush_sta_tids(mvm, i, 0xFF, 0);
4334                 else
4335                         iwl_mvm_wait_sta_queues_empty(mvm,
4336                                         iwl_mvm_sta_from_mac80211(sta));
4337         }
4338         mutex_unlock(&mvm->mutex);
4339 }
4340
4341 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4342                               struct ieee80211_vif *vif, u32 queues, bool drop)
4343 {
4344         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4345         struct iwl_mvm_vif *mvmvif;
4346         struct iwl_mvm_sta *mvmsta;
4347         struct ieee80211_sta *sta;
4348         int i;
4349         u32 msk = 0;
4350
4351         if (!vif) {
4352                 iwl_mvm_flush_no_vif(mvm, queues, drop);
4353                 return;
4354         }
4355
4356         if (vif->type != NL80211_IFTYPE_STATION)
4357                 return;
4358
4359         /* Make sure we're done with the deferred traffic before flushing */
4360         flush_work(&mvm->add_stream_wk);
4361
4362         mutex_lock(&mvm->mutex);
4363         mvmvif = iwl_mvm_vif_from_mac80211(vif);
4364
4365         /* flush the AP-station and all TDLS peers */
4366         for (i = 0; i < ARRAY_SIZE(mvm->fw_id_to_mac_id); i++) {
4367                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4368                                                 lockdep_is_held(&mvm->mutex));
4369                 if (IS_ERR_OR_NULL(sta))
4370                         continue;
4371
4372                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
4373                 if (mvmsta->vif != vif)
4374                         continue;
4375
4376                 /* make sure only TDLS peers or the AP are flushed */
4377                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4378
4379                 if (drop) {
4380                         if (iwl_mvm_flush_sta(mvm, mvmsta, false, 0))
4381                                 IWL_ERR(mvm, "flush request fail\n");
4382                 } else {
4383                         msk |= mvmsta->tfd_queue_msk;
4384                         if (iwl_mvm_has_new_tx_api(mvm))
4385                                 iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4386                 }
4387         }
4388
4389         mutex_unlock(&mvm->mutex);
4390
4391         /* this can take a while, and we may need/want other operations
4392          * to succeed while doing this, so do it without the mutex held
4393          */
4394         if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4395                 iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4396 }
4397
4398 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4399                                   struct survey_info *survey)
4400 {
4401         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4402         int ret;
4403
4404         memset(survey, 0, sizeof(*survey));
4405
4406         /* only support global statistics right now */
4407         if (idx != 0)
4408                 return -ENOENT;
4409
4410         if (!fw_has_capa(&mvm->fw->ucode_capa,
4411                          IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4412                 return -ENOENT;
4413
4414         mutex_lock(&mvm->mutex);
4415
4416         if (iwl_mvm_firmware_running(mvm)) {
4417                 ret = iwl_mvm_request_statistics(mvm, false);
4418                 if (ret)
4419                         goto out;
4420         }
4421
4422         survey->filled = SURVEY_INFO_TIME |
4423                          SURVEY_INFO_TIME_RX |
4424                          SURVEY_INFO_TIME_TX |
4425                          SURVEY_INFO_TIME_SCAN;
4426         survey->time = mvm->accu_radio_stats.on_time_rf +
4427                        mvm->radio_stats.on_time_rf;
4428         do_div(survey->time, USEC_PER_MSEC);
4429
4430         survey->time_rx = mvm->accu_radio_stats.rx_time +
4431                           mvm->radio_stats.rx_time;
4432         do_div(survey->time_rx, USEC_PER_MSEC);
4433
4434         survey->time_tx = mvm->accu_radio_stats.tx_time +
4435                           mvm->radio_stats.tx_time;
4436         do_div(survey->time_tx, USEC_PER_MSEC);
4437
4438         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4439                             mvm->radio_stats.on_time_scan;
4440         do_div(survey->time_scan, USEC_PER_MSEC);
4441
4442         ret = 0;
4443  out:
4444         mutex_unlock(&mvm->mutex);
4445         return ret;
4446 }
4447
4448 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
4449                                        struct ieee80211_vif *vif,
4450                                        struct ieee80211_sta *sta,
4451                                        struct station_info *sinfo)
4452 {
4453         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4454         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4455         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
4456
4457         if (mvmsta->avg_energy) {
4458                 sinfo->signal_avg = mvmsta->avg_energy;
4459                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
4460         }
4461
4462         /* if beacon filtering isn't on mac80211 does it anyway */
4463         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
4464                 return;
4465
4466         if (!vif->bss_conf.assoc)
4467                 return;
4468
4469         mutex_lock(&mvm->mutex);
4470
4471         if (mvmvif->ap_sta_id != mvmsta->sta_id)
4472                 goto unlock;
4473
4474         if (iwl_mvm_request_statistics(mvm, false))
4475                 goto unlock;
4476
4477         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
4478                            mvmvif->beacon_stats.accu_num_beacons;
4479         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
4480         if (mvmvif->beacon_stats.avg_signal) {
4481                 /* firmware only reports a value after RXing a few beacons */
4482                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
4483                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
4484         }
4485  unlock:
4486         mutex_unlock(&mvm->mutex);
4487 }
4488
4489 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
4490                                         struct ieee80211_vif *vif,
4491                                         const struct ieee80211_event *event)
4492 {
4493 #define CHECK_MLME_TRIGGER(_cnt, _fmt...)                               \
4494         do {                                                            \
4495                 if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))           \
4496                         break;                                          \
4497                 iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);      \
4498         } while (0)
4499
4500         struct iwl_fw_dbg_trigger_tlv *trig;
4501         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4502
4503         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4504                 return;
4505
4506         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4507         trig_mlme = (void *)trig->data;
4508         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4509                                            ieee80211_vif_to_wdev(vif), trig))
4510                 return;
4511
4512         if (event->u.mlme.data == ASSOC_EVENT) {
4513                 if (event->u.mlme.status == MLME_DENIED)
4514                         CHECK_MLME_TRIGGER(stop_assoc_denied,
4515                                            "DENIED ASSOC: reason %d",
4516                                             event->u.mlme.reason);
4517                 else if (event->u.mlme.status == MLME_TIMEOUT)
4518                         CHECK_MLME_TRIGGER(stop_assoc_timeout,
4519                                            "ASSOC TIMEOUT");
4520         } else if (event->u.mlme.data == AUTH_EVENT) {
4521                 if (event->u.mlme.status == MLME_DENIED)
4522                         CHECK_MLME_TRIGGER(stop_auth_denied,
4523                                            "DENIED AUTH: reason %d",
4524                                            event->u.mlme.reason);
4525                 else if (event->u.mlme.status == MLME_TIMEOUT)
4526                         CHECK_MLME_TRIGGER(stop_auth_timeout,
4527                                            "AUTH TIMEOUT");
4528         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4529                 CHECK_MLME_TRIGGER(stop_rx_deauth,
4530                                    "DEAUTH RX %d", event->u.mlme.reason);
4531         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4532                 CHECK_MLME_TRIGGER(stop_tx_deauth,
4533                                    "DEAUTH TX %d", event->u.mlme.reason);
4534         }
4535 #undef CHECK_MLME_TRIGGER
4536 }
4537
4538 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4539                                           struct ieee80211_vif *vif,
4540                                           const struct ieee80211_event *event)
4541 {
4542         struct iwl_fw_dbg_trigger_tlv *trig;
4543         struct iwl_fw_dbg_trigger_ba *ba_trig;
4544
4545         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4546                 return;
4547
4548         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4549         ba_trig = (void *)trig->data;
4550         if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
4551                                            ieee80211_vif_to_wdev(vif), trig))
4552                 return;
4553
4554         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4555                 return;
4556
4557         iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
4558                                 "BAR received from %pM, tid %d, ssn %d",
4559                                 event->u.ba.sta->addr, event->u.ba.tid,
4560                                 event->u.ba.ssn);
4561 }
4562
4563 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4564                                        struct ieee80211_vif *vif,
4565                                        const struct ieee80211_event *event)
4566 {
4567         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4568
4569         switch (event->type) {
4570         case MLME_EVENT:
4571                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4572                 break;
4573         case BAR_RX_EVENT:
4574                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4575                 break;
4576         case BA_FRAME_TIMEOUT:
4577                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
4578                                                      event->u.ba.tid);
4579                 break;
4580         default:
4581                 break;
4582         }
4583 }
4584
4585 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
4586                                      struct iwl_mvm_internal_rxq_notif *notif,
4587                                      u32 size)
4588 {
4589         u32 qmask = BIT(mvm->trans->num_rx_queues) - 1;
4590         int ret;
4591
4592         lockdep_assert_held(&mvm->mutex);
4593
4594         if (!iwl_mvm_has_new_rx_api(mvm))
4595                 return;
4596
4597         notif->cookie = mvm->queue_sync_cookie;
4598
4599         if (notif->sync)
4600                 atomic_set(&mvm->queue_sync_counter,
4601                            mvm->trans->num_rx_queues);
4602
4603         ret = iwl_mvm_notify_rx_queue(mvm, qmask, (u8 *)notif, size);
4604         if (ret) {
4605                 IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
4606                 goto out;
4607         }
4608
4609         if (notif->sync) {
4610                 ret = wait_event_timeout(mvm->rx_sync_waitq,
4611                                          atomic_read(&mvm->queue_sync_counter) == 0 ||
4612                                          iwl_mvm_is_radio_killed(mvm),
4613                                          HZ);
4614                 WARN_ON_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm));
4615         }
4616
4617 out:
4618         atomic_set(&mvm->queue_sync_counter, 0);
4619         mvm->queue_sync_cookie++;
4620 }
4621
4622 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
4623 {
4624         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4625         struct iwl_mvm_internal_rxq_notif data = {
4626                 .type = IWL_MVM_RXQ_EMPTY,
4627                 .sync = 1,
4628         };
4629
4630         mutex_lock(&mvm->mutex);
4631         iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
4632         mutex_unlock(&mvm->mutex);
4633 }
4634
4635 const struct ieee80211_ops iwl_mvm_hw_ops = {
4636         .tx = iwl_mvm_mac_tx,
4637         .ampdu_action = iwl_mvm_mac_ampdu_action,
4638         .start = iwl_mvm_mac_start,
4639         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4640         .stop = iwl_mvm_mac_stop,
4641         .add_interface = iwl_mvm_mac_add_interface,
4642         .remove_interface = iwl_mvm_mac_remove_interface,
4643         .config = iwl_mvm_mac_config,
4644         .prepare_multicast = iwl_mvm_prepare_multicast,
4645         .configure_filter = iwl_mvm_configure_filter,
4646         .config_iface_filter = iwl_mvm_config_iface_filter,
4647         .bss_info_changed = iwl_mvm_bss_info_changed,
4648         .hw_scan = iwl_mvm_mac_hw_scan,
4649         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4650         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4651         .sta_state = iwl_mvm_mac_sta_state,
4652         .sta_notify = iwl_mvm_mac_sta_notify,
4653         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4654         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4655         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4656         .sta_rc_update = iwl_mvm_sta_rc_update,
4657         .conf_tx = iwl_mvm_mac_conf_tx,
4658         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4659         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4660         .flush = iwl_mvm_mac_flush,
4661         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4662         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4663         .set_key = iwl_mvm_mac_set_key,
4664         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4665         .remain_on_channel = iwl_mvm_roc,
4666         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4667         .add_chanctx = iwl_mvm_add_chanctx,
4668         .remove_chanctx = iwl_mvm_remove_chanctx,
4669         .change_chanctx = iwl_mvm_change_chanctx,
4670         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4671         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4672         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4673
4674         .start_ap = iwl_mvm_start_ap_ibss,
4675         .stop_ap = iwl_mvm_stop_ap_ibss,
4676         .join_ibss = iwl_mvm_start_ap_ibss,
4677         .leave_ibss = iwl_mvm_stop_ap_ibss,
4678
4679         .tx_last_beacon = iwl_mvm_tx_last_beacon,
4680
4681         .set_tim = iwl_mvm_set_tim,
4682
4683         .channel_switch = iwl_mvm_channel_switch,
4684         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4685         .post_channel_switch = iwl_mvm_post_channel_switch,
4686
4687         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4688         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4689         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4690
4691         .event_callback = iwl_mvm_mac_event_callback,
4692
4693         .sync_rx_queues = iwl_mvm_sync_rx_queues,
4694
4695         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4696
4697 #ifdef CONFIG_PM_SLEEP
4698         /* look at d3.c */
4699         .suspend = iwl_mvm_suspend,
4700         .resume = iwl_mvm_resume,
4701         .set_wakeup = iwl_mvm_set_wakeup,
4702         .set_rekey_data = iwl_mvm_set_rekey_data,
4703 #if IS_ENABLED(CONFIG_IPV6)
4704         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4705 #endif
4706         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4707 #endif
4708         .get_survey = iwl_mvm_mac_get_survey,
4709         .sta_statistics = iwl_mvm_mac_sta_statistics,
4710 #ifdef CONFIG_IWLWIFI_DEBUGFS
4711         .sta_add_debugfs = iwl_mvm_sta_add_debugfs,
4712 #endif
4713 };