drivers/net/wireless/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 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of version 2 of the GNU General Public License as
  13  * published by the Free Software Foundation.
  14  *
  15  * This program is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23  * USA
  24  *
  25  * The full GNU General Public License is included in this distribution
  26  * in the file called COPYING.
  27  *
  28  * Contact Information:
  29  *  Intel Linux Wireless <ilw@linux.intel.com>
  30  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31  *
  32  * BSD LICENSE
  33  *
  34  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  *
  42  *  * Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  *  * Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in
  46  *    the documentation and/or other materials provided with the
  47  *    distribution.
  48  *  * Neither the name Intel Corporation nor the names of its
  49  *    contributors may be used to endorse or promote products derived
  50  *    from this software without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  *****************************************************************************/
  65 #include <linux/kernel.h>
  66 #include <linux/slab.h>
  67 #include <linux/skbuff.h>
  68 #include <linux/netdevice.h>
  69 #include <linux/etherdevice.h>
  70 #include <linux/ip.h>
  71 #include <linux/if_arp.h>
  72 #include <linux/devcoredump.h>
  73 #include <net/mac80211.h>
  74 #include <net/ieee80211_radiotap.h>
  75 #include <net/tcp.h>
  76
  77 #include "iwl-op-mode.h"
  78 #include "iwl-io.h"
  79 #include "mvm.h"
  80 #include "sta.h"
  81 #include "time-event.h"
  82 #include "iwl-eeprom-parse.h"
  83 #include "iwl-phy-db.h"
  84 #include "testmode.h"
  85 #include "iwl-fw-error-dump.h"
  86 #include "iwl-prph.h"
  87 #include "iwl-csr.h"
  88 #include "iwl-nvm-parse.h"
  89
  90 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  91         {
  92                 .max = 1,
  93                 .types = BIT(NL80211_IFTYPE_STATION),
  94         },
  95         {
  96                 .max = 1,
  97                 .types = BIT(NL80211_IFTYPE_AP) |
  98                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  99                         BIT(NL80211_IFTYPE_P2P_GO),
 100         },
 101         {
 102                 .max = 1,
 103                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
 104         },
 105 };
 106
 107 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 108         {
 109                 .num_different_channels = 2,
 110                 .max_interfaces = 3,
 111                 .limits = iwl_mvm_limits,
 112                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 113         },
 114 };
 115
 116 #ifdef CONFIG_PM_SLEEP
 117 static const struct nl80211_wowlan_tcp_data_token_feature
 118 iwl_mvm_wowlan_tcp_token_feature = {
 119         .min_len = 0,
 120         .max_len = 255,
 121         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 122 };
 123
 124 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 125         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 126         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 127                             sizeof(struct ethhdr) -
 128                             sizeof(struct iphdr) -
 129                             sizeof(struct tcphdr),
 130         .data_interval_max = 65535, /* __le16 in API */
 131         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 132                             sizeof(struct ethhdr) -
 133                             sizeof(struct iphdr) -
 134                             sizeof(struct tcphdr),
 135         .seq = true,
 136 };
 137 #endif
 138
 139 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 140 /*
 141  * Use the reserved field to indicate magic values.
 142  * these values will only be used internally by the driver,
 143  * and won't make it to the fw (reserved will be 0).
 144  * BC_FILTER_MAGIC_IP - configure the val of this attribute to
 145  *      be the vif's ip address. in case there is not a single
 146  *      ip address (0, or more than 1), this attribute will
 147  *      be skipped.
 148  * BC_FILTER_MAGIC_MAC - set the val of this attribute to
 149  *      the LSB bytes of the vif's mac address
 150  */
 151 enum {
 152         BC_FILTER_MAGIC_NONE = 0,
 153         BC_FILTER_MAGIC_IP,
 154         BC_FILTER_MAGIC_MAC,
 155 };
 156
 157 static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
 158         {
 159                 /* arp */
 160                 .discard = 0,
 161                 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
 162                 .attrs = {
 163                         {
 164                                 /* frame type - arp, hw type - ethernet */
 165                                 .offset_type =
 166                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 167                                 .offset = sizeof(rfc1042_header),
 168                                 .val = cpu_to_be32(0x08060001),
 169                                 .mask = cpu_to_be32(0xffffffff),
 170                         },
 171                         {
 172                                 /* arp dest ip */
 173                                 .offset_type =
 174                                         BCAST_FILTER_OFFSET_PAYLOAD_START,
 175                                 .offset = sizeof(rfc1042_header) + 2 +
 176                                           sizeof(struct arphdr) +
 177                                           ETH_ALEN + sizeof(__be32) +
 178                                           ETH_ALEN,
 179                                 .mask = cpu_to_be32(0xffffffff),
 180                                 /* mark it as special field */
 181                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
 182                         },
 183                 },
 184         },
 185         {
 186                 /* dhcp offer bcast */
 187                 .discard = 0,
 188                 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
 189                 .attrs = {
 190                         {
 191                                 /* udp dest port - 68 (bootp client)*/
 192                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 193                                 .offset = offsetof(struct udphdr, dest),
 194                                 .val = cpu_to_be32(0x00440000),
 195                                 .mask = cpu_to_be32(0xffff0000),
 196                         },
 197                         {
 198                                 /* dhcp - lsb bytes of client hw address */
 199                                 .offset_type = BCAST_FILTER_OFFSET_IP_END,
 200                                 .offset = 38,
 201                                 .mask = cpu_to_be32(0xffffffff),
 202                                 /* mark it as special field */
 203                                 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
 204                         },
 205                 },
 206         },
 207         /* last filter must be empty */
 208         {},
 209 };
 210 #endif
 211
 212 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 213 {
 214         if (!iwl_mvm_is_d0i3_supported(mvm))
 215                 return;
 216
 217         IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
 218         spin_lock_bh(&mvm->refs_lock);
 219         mvm->refs[ref_type]++;
 220         spin_unlock_bh(&mvm->refs_lock);
 221         iwl_trans_ref(mvm->trans);
 222 }
 223
 224 void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 225 {
 226         if (!iwl_mvm_is_d0i3_supported(mvm))
 227                 return;
 228
 229         IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
 230         spin_lock_bh(&mvm->refs_lock);
 231         WARN_ON(!mvm->refs[ref_type]--);
 232         spin_unlock_bh(&mvm->refs_lock);
 233         iwl_trans_unref(mvm->trans);
 234 }
 235
 236 static void iwl_mvm_unref_all_except(struct iwl_mvm *mvm,
 237                                      enum iwl_mvm_ref_type except_ref)
 238 {
 239         int i, j;
 240
 241         if (!iwl_mvm_is_d0i3_supported(mvm))
 242                 return;
 243
 244         spin_lock_bh(&mvm->refs_lock);
 245         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 246                 if (except_ref == i || !mvm->refs[i])
 247                         continue;
 248
 249                 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d (%d)\n",
 250                               i, mvm->refs[i]);
 251                 for (j = 0; j < mvm->refs[i]; j++)
 252                         iwl_trans_unref(mvm->trans);
 253                 mvm->refs[i] = 0;
 254         }
 255         spin_unlock_bh(&mvm->refs_lock);
 256 }
 257
 258 bool iwl_mvm_ref_taken(struct iwl_mvm *mvm)
 259 {
 260         int i;
 261         bool taken = false;
 262
 263         if (!iwl_mvm_is_d0i3_supported(mvm))
 264                 return true;
 265
 266         spin_lock_bh(&mvm->refs_lock);
 267         for (i = 0; i < IWL_MVM_REF_COUNT; i++) {
 268                 if (mvm->refs[i]) {
 269                         taken = true;
 270                         break;
 271                 }
 272         }
 273         spin_unlock_bh(&mvm->refs_lock);
 274
 275         return taken;
 276 }
 277
 278 int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 279 {
 280         iwl_mvm_ref(mvm, ref_type);
 281
 282         if (!wait_event_timeout(mvm->d0i3_exit_waitq,
 283                                 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
 284                                 HZ)) {
 285                 WARN_ON_ONCE(1);
 286                 iwl_mvm_unref(mvm, ref_type);
 287                 return -EIO;
 288         }
 289
 290         return 0;
 291 }
 292
 293 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 294 {
 295         int i;
 296
 297         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 298         for (i = 0; i < NUM_PHY_CTX; i++) {
 299                 mvm->phy_ctxts[i].id = i;
 300                 mvm->phy_ctxts[i].ref = 0;
 301         }
 302 }
 303
 304 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 305                                                   const char *alpha2,
 306                                                   enum iwl_mcc_source src_id,
 307                                                   bool *changed)
 308 {
 309         struct ieee80211_regdomain *regd = NULL;
 310         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
 311         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 312         struct iwl_mcc_update_resp *resp;
 313
 314         IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
 315
 316         lockdep_assert_held(&mvm->mutex);
 317
 318         resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
 319         if (IS_ERR_OR_NULL(resp)) {
 320                 IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 321                               PTR_ERR_OR_ZERO(resp));
 322                 goto out;
 323         }
 324
 325         if (changed)
 326                 *changed = (resp->status == MCC_RESP_NEW_CHAN_PROFILE);
 327
 328         regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
 329                                       __le32_to_cpu(resp->n_channels),
 330                                       resp->channels,
 331                                       __le16_to_cpu(resp->mcc));
 332         /* Store the return source id */
 333         src_id = resp->source_id;
 334         kfree(resp);
 335         if (IS_ERR_OR_NULL(regd)) {
 336                 IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 337                               PTR_ERR_OR_ZERO(regd));
 338                 goto out;
 339         }
 340
 341         IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
 342                       regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
 343         mvm->lar_regdom_set = true;
 344         mvm->mcc_src = src_id;
 345
 346 out:
 347         return regd;
 348 }
 349
 350 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
 351 {
 352         bool changed;
 353         struct ieee80211_regdomain *regd;
 354
 355         if (!iwl_mvm_is_lar_supported(mvm))
 356                 return;
 357
 358         regd = iwl_mvm_get_current_regdomain(mvm, &changed);
 359         if (!IS_ERR_OR_NULL(regd)) {
 360                 /* only update the regulatory core if changed */
 361                 if (changed)
 362                         regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
 363
 364                 kfree(regd);
 365         }
 366 }
 367
 368 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
 369                                                           bool *changed)
 370 {
 371         return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
 372                                      iwl_mvm_is_wifi_mcc_supported(mvm) ?
 373                                      MCC_SOURCE_GET_CURRENT :
 374                                      MCC_SOURCE_OLD_FW, changed);
 375 }
 376
 377 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
 378 {
 379         enum iwl_mcc_source used_src;
 380         struct ieee80211_regdomain *regd;
 381         int ret;
 382         bool changed;
 383         const struct ieee80211_regdomain *r =
 384                         rtnl_dereference(mvm->hw->wiphy->regd);
 385
 386         if (!r)
 387                 return -ENOENT;
 388
 389         /* save the last source in case we overwrite it below */
 390         used_src = mvm->mcc_src;
 391         if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
 392                 /* Notify the firmware we support wifi location updates */
 393                 regd = iwl_mvm_get_current_regdomain(mvm, NULL);
 394                 if (!IS_ERR_OR_NULL(regd))
 395                         kfree(regd);
 396         }
 397
 398         /* Now set our last stored MCC and source */
 399         regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
 400                                      &changed);
 401         if (IS_ERR_OR_NULL(regd))
 402                 return -EIO;
 403
 404         /* update cfg80211 if the regdomain was changed */
 405         if (changed)
 406                 ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
 407         else
 408                 ret = 0;
 409
 410         kfree(regd);
 411         return ret;
 412 }
 413
 414 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 415 {
 416         struct ieee80211_hw *hw = mvm->hw;
 417         int num_mac, ret, i;
 418         static const u32 mvm_ciphers[] = {
 419                 WLAN_CIPHER_SUITE_WEP40,
 420                 WLAN_CIPHER_SUITE_WEP104,
 421                 WLAN_CIPHER_SUITE_TKIP,
 422                 WLAN_CIPHER_SUITE_CCMP,
 423         };
 424
 425         /* Tell mac80211 our characteristics */
 426         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 427                     IEEE80211_HW_SPECTRUM_MGMT |
 428                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 429                     IEEE80211_HW_QUEUE_CONTROL |
 430                     IEEE80211_HW_WANT_MONITOR_VIF |
 431                     IEEE80211_HW_SUPPORTS_PS |
 432                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 433                     IEEE80211_HW_AMPDU_AGGREGATION |
 434                     IEEE80211_HW_TIMING_BEACON_ONLY |
 435                     IEEE80211_HW_CONNECTION_MONITOR |
 436                     IEEE80211_HW_CHANCTX_STA_CSA |
 437                     IEEE80211_HW_SUPPORT_FAST_XMIT |
 438                     IEEE80211_HW_SUPPORTS_CLONED_SKBS;
 439
 440         hw->queues = mvm->first_agg_queue;
 441         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 442         hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
 443                                     IEEE80211_RADIOTAP_MCS_HAVE_STBC;
 444         hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
 445                 IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
 446         hw->rate_control_algorithm = "iwl-mvm-rs";
 447         hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
 448         hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 449
 450         BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 2);
 451         memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
 452         hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
 453         hw->wiphy->cipher_suites = mvm->ciphers;
 454
 455         /*
 456          * Enable 11w if advertised by firmware and software crypto
 457          * is not enabled (as the firmware will interpret some mgmt
 458          * packets, so enabling it with software crypto isn't safe)
 459          */
 460         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 461             !iwlwifi_mod_params.sw_crypto) {
 462                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 463                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 464                         WLAN_CIPHER_SUITE_AES_CMAC;
 465                 hw->wiphy->n_cipher_suites++;
 466         }
 467
 468         /* currently FW API supports only one optional cipher scheme */
 469         if (mvm->fw->cs[0].cipher) {
 470                 mvm->hw->n_cipher_schemes = 1;
 471                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 472                 mvm->ciphers[hw->wiphy->n_cipher_suites] =
 473                         mvm->fw->cs[0].cipher;
 474                 hw->wiphy->n_cipher_suites++;
 475         }
 476
 477         hw->flags |= IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS;
 478         hw->wiphy->features |=
 479                 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
 480                 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
 481                 NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
 482
 483         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 484         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 485         hw->chanctx_data_size = sizeof(u16);
 486
 487         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 488                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 489                 BIT(NL80211_IFTYPE_AP) |
 490                 BIT(NL80211_IFTYPE_P2P_GO) |
 491                 BIT(NL80211_IFTYPE_P2P_DEVICE) |
 492                 BIT(NL80211_IFTYPE_ADHOC);
 493
 494         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 495         hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
 496         if (iwl_mvm_is_lar_supported(mvm))
 497                 hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
 498         else
 499                 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 500                                                REGULATORY_DISABLE_BEACON_HINTS;
 501
 502         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
 503                 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 504
 505         hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 506
 507         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 508         hw->wiphy->n_iface_combinations =
 509                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 510
 511         hw->wiphy->max_remain_on_channel_duration = 10000;
 512         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 513         /* we can compensate an offset of up to 3 channels = 15 MHz */
 514         hw->wiphy->max_adj_channel_rssi_comp = 3 * 5;
 515
 516         /* Extract MAC address */
 517         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 518         hw->wiphy->addresses = mvm->addresses;
 519         hw->wiphy->n_addresses = 1;
 520
 521         /* Extract additional MAC addresses if available */
 522         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 523                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 524
 525         for (i = 1; i < num_mac; i++) {
 526                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 527                        ETH_ALEN);
 528                 mvm->addresses[i].addr[5]++;
 529                 hw->wiphy->n_addresses++;
 530         }
 531
 532         iwl_mvm_reset_phy_ctxts(mvm);
 533
 534         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 535
 536         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 537
 538         BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
 539         BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
 540                      IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
 541
 542         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
 543                 mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
 544         else
 545                 mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
 546
 547         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 548                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 549                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 550         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels) {
 551                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 552                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 553
 554                 if (fw_has_capa(&mvm->fw->ucode_capa,
 555                                 IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
 556                     fw_has_api(&mvm->fw->ucode_capa,
 557                                IWL_UCODE_TLV_API_LQ_SS_PARAMS))
 558                         hw->wiphy->bands[IEEE80211_BAND_5GHZ]->vht_cap.cap |=
 559                                 IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
 560         }
 561
 562         hw->wiphy->hw_version = mvm->trans->hw_id;
 563
 564         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 565                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 566         else
 567                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 568
 569         hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 570         hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 571         hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 572         /* we create the 802.11 header and zero length SSID IE. */
 573         hw->wiphy->max_sched_scan_ie_len =
 574                 SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 575
 576         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 577                                NL80211_FEATURE_LOW_PRIORITY_SCAN |
 578                                NL80211_FEATURE_P2P_GO_OPPPS |
 579                                NL80211_FEATURE_DYNAMIC_SMPS |
 580                                NL80211_FEATURE_STATIC_SMPS |
 581                                NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
 582
 583         if (fw_has_capa(&mvm->fw->ucode_capa,
 584                         IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
 585                 hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
 586         if (fw_has_capa(&mvm->fw->ucode_capa,
 587                         IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
 588                 hw->wiphy->features |= NL80211_FEATURE_QUIET;
 589
 590         if (fw_has_capa(&mvm->fw->ucode_capa,
 591                         IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
 592                 hw->wiphy->features |=
 593                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
 594
 595         if (fw_has_capa(&mvm->fw->ucode_capa,
 596                         IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 597                 hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
 598
 599         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 600
 601 #ifdef CONFIG_PM_SLEEP
 602         if (iwl_mvm_is_d0i3_supported(mvm) &&
 603             device_can_wakeup(mvm->trans->dev)) {
 604                 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
 605                 hw->wiphy->wowlan = &mvm->wowlan;
 606         }
 607
 608         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 609             mvm->trans->ops->d3_suspend &&
 610             mvm->trans->ops->d3_resume &&
 611             device_can_wakeup(mvm->trans->dev)) {
 612                 mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
 613                                      WIPHY_WOWLAN_DISCONNECT |
 614                                      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 615                                      WIPHY_WOWLAN_RFKILL_RELEASE |
 616                                      WIPHY_WOWLAN_NET_DETECT;
 617                 if (!iwlwifi_mod_params.sw_crypto)
 618                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 619                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 620                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 621
 622                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 623                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 624                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 625                 mvm->wowlan.max_nd_match_sets = IWL_SCAN_MAX_PROFILES;
 626                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 627                 hw->wiphy->wowlan = &mvm->wowlan;
 628         }
 629 #endif
 630
 631 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
 632         /* assign default bcast filtering configuration */
 633         mvm->bcast_filters = iwl_mvm_default_bcast_filters;
 634 #endif
 635
 636         ret = iwl_mvm_leds_init(mvm);
 637         if (ret)
 638                 return ret;
 639
 640         if (fw_has_capa(&mvm->fw->ucode_capa,
 641                         IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
 642                 IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
 643                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
 644         }
 645
 646         if (fw_has_capa(&mvm->fw->ucode_capa,
 647                         IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
 648                 IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
 649                 hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
 650         }
 651
 652         ret = ieee80211_register_hw(mvm->hw);
 653         if (ret)
 654                 iwl_mvm_leds_exit(mvm);
 655
 656         return ret;
 657 }
 658
 659 static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
 660                              struct ieee80211_sta *sta,
 661                              struct sk_buff *skb)
 662 {
 663         struct iwl_mvm_sta *mvmsta;
 664         bool defer = false;
 665
 666         /*
 667          * double check the IN_D0I3 flag both before and after
 668          * taking the spinlock, in order to prevent taking
 669          * the spinlock when not needed.
 670          */
 671         if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
 672                 return false;
 673
 674         spin_lock(&mvm->d0i3_tx_lock);
 675         /*
 676          * testing the flag again ensures the skb dequeue
 677          * loop (on d0i3 exit) hasn't run yet.
 678          */
 679         if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
 680                 goto out;
 681
 682         mvmsta = iwl_mvm_sta_from_mac80211(sta);
 683         if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
 684             mvmsta->sta_id != mvm->d0i3_ap_sta_id)
 685                 goto out;
 686
 687         __skb_queue_tail(&mvm->d0i3_tx, skb);
 688         ieee80211_stop_queues(mvm->hw);
 689
 690         /* trigger wakeup */
 691         iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
 692         iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
 693
 694         defer = true;
 695 out:
 696         spin_unlock(&mvm->d0i3_tx_lock);
 697         return defer;
 698 }
 699
 700 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 701                            struct ieee80211_tx_control *control,
 702                            struct sk_buff *skb)
 703 {
 704         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 705         struct ieee80211_sta *sta = control->sta;
 706         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 707         struct ieee80211_hdr *hdr = (void *)skb->data;
 708
 709         if (iwl_mvm_is_radio_killed(mvm)) {
 710                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 711                 goto drop;
 712         }
 713
 714         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 715             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
 716             !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
 717                 goto drop;
 718
 719         /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
 720         if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
 721                      ieee80211_is_mgmt(hdr->frame_control) &&
 722                      !ieee80211_is_deauth(hdr->frame_control) &&
 723                      !ieee80211_is_disassoc(hdr->frame_control) &&
 724                      !ieee80211_is_action(hdr->frame_control)))
 725                 sta = NULL;
 726
 727         if (sta) {
 728                 if (iwl_mvm_defer_tx(mvm, sta, skb))
 729                         return;
 730                 if (iwl_mvm_tx_skb(mvm, skb, sta))
 731                         goto drop;
 732                 return;
 733         }
 734
 735         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 736                 goto drop;
 737         return;
 738  drop:
 739         ieee80211_free_txskb(hw, skb);
 740 }
 741
 742 static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
 743 {
 744         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
 745                 return false;
 746         return true;
 747 }
 748
 749 static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
 750 {
 751         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
 752                 return false;
 753         if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
 754                 return true;
 755
 756         /* enabled by default */
 757         return true;
 758 }
 759
 760 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)   \
 761         do {                                                    \
 762                 if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))        \
 763                         break;                                  \
 764                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt); \
 765         } while (0)
 766
 767 static void
 768 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 769                             struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
 770                             enum ieee80211_ampdu_mlme_action action)
 771 {
 772         struct iwl_fw_dbg_trigger_tlv *trig;
 773         struct iwl_fw_dbg_trigger_ba *ba_trig;
 774
 775         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
 776                 return;
 777
 778         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
 779         ba_trig = (void *)trig->data;
 780
 781         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
 782                 return;
 783
 784         switch (action) {
 785         case IEEE80211_AMPDU_TX_OPERATIONAL: {
 786                 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 787                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
 788
 789                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
 790                                  "TX AGG START: MAC %pM tid %d ssn %d\n",
 791                                  sta->addr, tid, tid_data->ssn);
 792                 break;
 793                 }
 794         case IEEE80211_AMPDU_TX_STOP_CONT:
 795                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
 796                                  "TX AGG STOP: MAC %pM tid %d\n",
 797                                  sta->addr, tid);
 798                 break;
 799         case IEEE80211_AMPDU_RX_START:
 800                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
 801                                  "RX AGG START: MAC %pM tid %d ssn %d\n",
 802                                  sta->addr, tid, rx_ba_ssn);
 803                 break;
 804         case IEEE80211_AMPDU_RX_STOP:
 805                 CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
 806                                  "RX AGG STOP: MAC %pM tid %d\n",
 807                                  sta->addr, tid);
 808                 break;
 809         default:
 810                 break;
 811         }
 812 }
 813
 814 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 815                                     struct ieee80211_vif *vif,
 816                                     enum ieee80211_ampdu_mlme_action action,
 817                                     struct ieee80211_sta *sta, u16 tid,
 818                                     u16 *ssn, u8 buf_size)
 819 {
 820         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 821         int ret;
 822         bool tx_agg_ref = false;
 823
 824         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 825                      sta->addr, tid, action);
 826
 827         if (!(mvm->nvm_data->sku_cap_11n_enable))
 828                 return -EACCES;
 829
 830         /* return from D0i3 before starting a new Tx aggregation */
 831         switch (action) {
 832         case IEEE80211_AMPDU_TX_START:
 833         case IEEE80211_AMPDU_TX_STOP_CONT:
 834         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 835         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 836         case IEEE80211_AMPDU_TX_OPERATIONAL:
 837                 /*
 838                  * for tx start, wait synchronously until D0i3 exit to
 839                  * get the correct sequence number for the tid.
 840                  * additionally, some other ampdu actions use direct
 841                  * target access, which is not handled automatically
 842                  * by the trans layer (unlike commands), so wait for
 843                  * d0i3 exit in these cases as well.
 844                  */
 845                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
 846                 if (ret)
 847                         return ret;
 848
 849                 tx_agg_ref = true;
 850                 break;
 851         default:
 852                 break;
 853         }
 854
 855         mutex_lock(&mvm->mutex);
 856
 857         switch (action) {
 858         case IEEE80211_AMPDU_RX_START:
 859                 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
 860                         ret = -EINVAL;
 861                         break;
 862                 }
 863                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 864                 break;
 865         case IEEE80211_AMPDU_RX_STOP:
 866                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 867                 break;
 868         case IEEE80211_AMPDU_TX_START:
 869                 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
 870                         ret = -EINVAL;
 871                         break;
 872                 }
 873                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 874                 break;
 875         case IEEE80211_AMPDU_TX_STOP_CONT:
 876                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 877                 break;
 878         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 879         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 880                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 881                 break;
 882         case IEEE80211_AMPDU_TX_OPERATIONAL:
 883                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 884                 break;
 885         default:
 886                 WARN_ON_ONCE(1);
 887                 ret = -EINVAL;
 888                 break;
 889         }
 890
 891         if (!ret) {
 892                 u16 rx_ba_ssn = 0;
 893
 894                 if (action == IEEE80211_AMPDU_RX_START)
 895                         rx_ba_ssn = *ssn;
 896
 897                 iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
 898                                             rx_ba_ssn, action);
 899         }
 900         mutex_unlock(&mvm->mutex);
 901
 902         /*
 903          * If the tid is marked as started, we won't use it for offloaded
 904          * traffic on the next D0i3 entry. It's safe to unref.
 905          */
 906         if (tx_agg_ref)
 907                 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
 908
 909         return ret;
 910 }
 911
 912 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 913                                      struct ieee80211_vif *vif)
 914 {
 915         struct iwl_mvm *mvm = data;
 916         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 917
 918         mvmvif->uploaded = false;
 919         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 920
 921         spin_lock_bh(&mvm->time_event_lock);
 922         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 923         spin_unlock_bh(&mvm->time_event_lock);
 924
 925         mvmvif->phy_ctxt = NULL;
 926         memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
 927 }
 928
 929 static ssize_t iwl_mvm_read_coredump(char *buffer, loff_t offset, size_t count,
 930                                      const void *data, size_t datalen)
 931 {
 932         const struct iwl_mvm_dump_ptrs *dump_ptrs = data;
 933         ssize_t bytes_read;
 934         ssize_t bytes_read_trans;
 935
 936         if (offset < dump_ptrs->op_mode_len) {
 937                 bytes_read = min_t(ssize_t, count,
 938                                    dump_ptrs->op_mode_len - offset);
 939                 memcpy(buffer, (u8 *)dump_ptrs->op_mode_ptr + offset,
 940                        bytes_read);
 941                 offset += bytes_read;
 942                 count -= bytes_read;
 943
 944                 if (count == 0)
 945                         return bytes_read;
 946         } else {
 947                 bytes_read = 0;
 948         }
 949
 950         if (!dump_ptrs->trans_ptr)
 951                 return bytes_read;
 952
 953         offset -= dump_ptrs->op_mode_len;
 954         bytes_read_trans = min_t(ssize_t, count,
 955                                  dump_ptrs->trans_ptr->len - offset);
 956         memcpy(buffer + bytes_read,
 957                (u8 *)dump_ptrs->trans_ptr->data + offset,
 958                bytes_read_trans);
 959
 960         return bytes_read + bytes_read_trans;
 961 }
 962
 963 static void iwl_mvm_free_coredump(const void *data)
 964 {
 965         const struct iwl_mvm_dump_ptrs *fw_error_dump = data;
 966
 967         vfree(fw_error_dump->op_mode_ptr);
 968         vfree(fw_error_dump->trans_ptr);
 969         kfree(fw_error_dump);
 970 }
 971
 972 static void iwl_mvm_dump_fifos(struct iwl_mvm *mvm,
 973                                struct iwl_fw_error_dump_data **dump_data)
 974 {
 975         struct iwl_fw_error_dump_fifo *fifo_hdr;
 976         u32 *fifo_data;
 977         u32 fifo_len;
 978         unsigned long flags;
 979         int i, j;
 980
 981         if (!iwl_trans_grab_nic_access(mvm->trans, false, &flags))
 982                 return;
 983
 984         /* Pull RXF data from all RXFs */
 985         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.rxfifo_size); i++) {
 986                 /*
 987                  * Keep aside the additional offset that might be needed for
 988                  * next RXF
 989                  */
 990                 u32 offset_diff = RXF_DIFF_FROM_PREV * i;
 991
 992                 fifo_hdr = (void *)(*dump_data)->data;
 993                 fifo_data = (void *)fifo_hdr->data;
 994                 fifo_len = mvm->shared_mem_cfg.rxfifo_size[i];
 995
 996                 /* No need to try to read the data if the length is 0 */
 997                 if (fifo_len == 0)
 998                         continue;
 999
1000                 /* Add a TLV for the RXF */
1001                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
1002                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1003
1004                 fifo_hdr->fifo_num = cpu_to_le32(i);
1005                 fifo_hdr->available_bytes =
1006                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1007                                                         RXF_RD_D_SPACE +
1008                                                         offset_diff));
1009                 fifo_hdr->wr_ptr =
1010                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1011                                                         RXF_RD_WR_PTR +
1012                                                         offset_diff));
1013                 fifo_hdr->rd_ptr =
1014                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1015                                                         RXF_RD_RD_PTR +
1016                                                         offset_diff));
1017                 fifo_hdr->fence_ptr =
1018                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1019                                                         RXF_RD_FENCE_PTR +
1020                                                         offset_diff));
1021                 fifo_hdr->fence_mode =
1022                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1023                                                         RXF_SET_FENCE_MODE +
1024                                                         offset_diff));
1025
1026                 /* Lock fence */
1027                 iwl_trans_write_prph(mvm->trans,
1028                                      RXF_SET_FENCE_MODE + offset_diff, 0x1);
1029                 /* Set fence pointer to the same place like WR pointer */
1030                 iwl_trans_write_prph(mvm->trans,
1031                                      RXF_LD_WR2FENCE + offset_diff, 0x1);
1032                 /* Set fence offset */
1033                 iwl_trans_write_prph(mvm->trans,
1034                                      RXF_LD_FENCE_OFFSET_ADDR + offset_diff,
1035                                      0x0);
1036
1037                 /* Read FIFO */
1038                 fifo_len /= sizeof(u32); /* Size in DWORDS */
1039                 for (j = 0; j < fifo_len; j++)
1040                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1041                                                          RXF_FIFO_RD_FENCE_INC +
1042                                                          offset_diff);
1043                 *dump_data = iwl_fw_error_next_data(*dump_data);
1044         }
1045
1046         /* Pull TXF data from all TXFs */
1047         for (i = 0; i < ARRAY_SIZE(mvm->shared_mem_cfg.txfifo_size); i++) {
1048                 /* Mark the number of TXF we're pulling now */
1049                 iwl_trans_write_prph(mvm->trans, TXF_LARC_NUM, i);
1050
1051                 fifo_hdr = (void *)(*dump_data)->data;
1052                 fifo_data = (void *)fifo_hdr->data;
1053                 fifo_len = mvm->shared_mem_cfg.txfifo_size[i];
1054
1055                 /* No need to try to read the data if the length is 0 */
1056                 if (fifo_len == 0)
1057                         continue;
1058
1059                 /* Add a TLV for the FIFO */
1060                 (*dump_data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXF);
1061                 (*dump_data)->len = cpu_to_le32(fifo_len + sizeof(*fifo_hdr));
1062
1063                 fifo_hdr->fifo_num = cpu_to_le32(i);
1064                 fifo_hdr->available_bytes =
1065                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1066                                                         TXF_FIFO_ITEM_CNT));
1067                 fifo_hdr->wr_ptr =
1068                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1069                                                         TXF_WR_PTR));
1070                 fifo_hdr->rd_ptr =
1071                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1072                                                         TXF_RD_PTR));
1073                 fifo_hdr->fence_ptr =
1074                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1075                                                         TXF_FENCE_PTR));
1076                 fifo_hdr->fence_mode =
1077                         cpu_to_le32(iwl_trans_read_prph(mvm->trans,
1078                                                         TXF_LOCK_FENCE));
1079
1080                 /* Set the TXF_READ_MODIFY_ADDR to TXF_WR_PTR */
1081                 iwl_trans_write_prph(mvm->trans, TXF_READ_MODIFY_ADDR,
1082                                      TXF_WR_PTR);
1083
1084                 /* Dummy-read to advance the read pointer to the head */
1085                 iwl_trans_read_prph(mvm->trans, TXF_READ_MODIFY_DATA);
1086
1087                 /* Read FIFO */
1088                 fifo_len /= sizeof(u32); /* Size in DWORDS */
1089                 for (j = 0; j < fifo_len; j++)
1090                         fifo_data[j] = iwl_trans_read_prph(mvm->trans,
1091                                                           TXF_READ_MODIFY_DATA);
1092                 *dump_data = iwl_fw_error_next_data(*dump_data);
1093         }
1094
1095         iwl_trans_release_nic_access(mvm->trans, &flags);
1096 }
1097
1098 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm)
1099 {
1100         if (mvm->fw_dump_desc == &iwl_mvm_dump_desc_assert ||
1101             !mvm->fw_dump_desc)
1102                 return;
1103
1104         kfree(mvm->fw_dump_desc);
1105         mvm->fw_dump_desc = NULL;
1106 }
1107
1108 #define IWL8260_ICCM_OFFSET             0x44000 /* Only for B-step */
1109 #define IWL8260_ICCM_LEN                0xC000 /* Only for B-step */
1110
1111 void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
1112 {
1113         struct iwl_fw_error_dump_file *dump_file;
1114         struct iwl_fw_error_dump_data *dump_data;
1115         struct iwl_fw_error_dump_info *dump_info;
1116         struct iwl_fw_error_dump_mem *dump_mem;
1117         struct iwl_fw_error_dump_trigger_desc *dump_trig;
1118         struct iwl_mvm_dump_ptrs *fw_error_dump;
1119         u32 sram_len, sram_ofs;
1120         u32 file_len, fifo_data_len = 0;
1121         u32 smem_len = mvm->cfg->smem_len;
1122         u32 sram2_len = mvm->cfg->dccm2_len;
1123
1124         lockdep_assert_held(&mvm->mutex);
1125
1126         fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
1127         if (!fw_error_dump)
1128                 return;
1129
1130         /* SRAM - include stack CCM if driver knows the values for it */
1131         if (!mvm->cfg->dccm_offset || !mvm->cfg->dccm_len) {
1132                 const struct fw_img *img;
1133
1134                 img = &mvm->fw->img[mvm->cur_ucode];
1135                 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1136                 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
1137         } else {
1138                 sram_ofs = mvm->cfg->dccm_offset;
1139                 sram_len = mvm->cfg->dccm_len;
1140         }
1141
1142         /* reading RXF/TXF sizes */
1143         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status)) {
1144                 struct iwl_mvm_shared_mem_cfg *mem_cfg = &mvm->shared_mem_cfg;
1145                 int i;
1146
1147                 fifo_data_len = 0;
1148
1149                 /* Count RXF size */
1150                 for (i = 0; i < ARRAY_SIZE(mem_cfg->rxfifo_size); i++) {
1151                         if (!mem_cfg->rxfifo_size[i])
1152                                 continue;
1153
1154                         /* Add header info */
1155                         fifo_data_len += mem_cfg->rxfifo_size[i] +
1156                                          sizeof(*dump_data) +
1157                                          sizeof(struct iwl_fw_error_dump_fifo);
1158                 }
1159
1160                 for (i = 0; i < ARRAY_SIZE(mem_cfg->txfifo_size); i++) {
1161                         if (!mem_cfg->txfifo_size[i])
1162                                 continue;
1163
1164                         /* Add header info */
1165                         fifo_data_len += mem_cfg->txfifo_size[i] +
1166                                          sizeof(*dump_data) +
1167                                          sizeof(struct iwl_fw_error_dump_fifo);
1168                 }
1169         }
1170
1171         file_len = sizeof(*dump_file) +
1172                    sizeof(*dump_data) * 2 +
1173                    sram_len + sizeof(*dump_mem) +
1174                    fifo_data_len +
1175                    sizeof(*dump_info);
1176
1177         /*
1178          * In 8000 HW family B-step include the ICCM (which resides separately)
1179          */
1180         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1181             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP)
1182                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) +
1183                             IWL8260_ICCM_LEN;
1184
1185         if (mvm->fw_dump_desc)
1186                 file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
1187                             mvm->fw_dump_desc->len;
1188
1189         /* Make room for the SMEM, if it exists */
1190         if (smem_len)
1191                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
1192
1193         /* Make room for the secondary SRAM, if it exists */
1194         if (sram2_len)
1195                 file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
1196
1197         dump_file = vzalloc(file_len);
1198         if (!dump_file) {
1199                 kfree(fw_error_dump);
1200                 iwl_mvm_free_fw_dump_desc(mvm);
1201                 return;
1202         }
1203
1204         fw_error_dump->op_mode_ptr = dump_file;
1205
1206         dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
1207         dump_data = (void *)dump_file->data;
1208
1209         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
1210         dump_data->len = cpu_to_le32(sizeof(*dump_info));
1211         dump_info = (void *) dump_data->data;
1212         dump_info->device_family =
1213                 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
1214                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
1215                         cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
1216         dump_info->hw_step = cpu_to_le32(CSR_HW_REV_STEP(mvm->trans->hw_rev));
1217         memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
1218                sizeof(dump_info->fw_human_readable));
1219         strncpy(dump_info->dev_human_readable, mvm->cfg->name,
1220                 sizeof(dump_info->dev_human_readable));
1221         strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
1222                 sizeof(dump_info->bus_human_readable));
1223
1224         dump_data = iwl_fw_error_next_data(dump_data);
1225         /* We only dump the FIFOs if the FW is in error state */
1226         if (test_bit(STATUS_FW_ERROR, &mvm->trans->status))
1227                 iwl_mvm_dump_fifos(mvm, &dump_data);
1228
1229         if (mvm->fw_dump_desc) {
1230                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
1231                 dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
1232                                              mvm->fw_dump_desc->len);
1233                 dump_trig = (void *)dump_data->data;
1234                 memcpy(dump_trig, &mvm->fw_dump_desc->trig_desc,
1235                        sizeof(*dump_trig) + mvm->fw_dump_desc->len);
1236
1237                 /* now we can free this copy */
1238                 iwl_mvm_free_fw_dump_desc(mvm);
1239                 dump_data = iwl_fw_error_next_data(dump_data);
1240         }
1241
1242         dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1243         dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
1244         dump_mem = (void *)dump_data->data;
1245         dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1246         dump_mem->offset = cpu_to_le32(sram_ofs);
1247         iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_mem->data,
1248                                  sram_len);
1249
1250         if (smem_len) {
1251                 dump_data = iwl_fw_error_next_data(dump_data);
1252                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1253                 dump_data->len = cpu_to_le32(smem_len + sizeof(*dump_mem));
1254                 dump_mem = (void *)dump_data->data;
1255                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SMEM);
1256                 dump_mem->offset = cpu_to_le32(mvm->cfg->smem_offset);
1257                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->smem_offset,
1258                                          dump_mem->data, smem_len);
1259         }
1260
1261         if (sram2_len) {
1262                 dump_data = iwl_fw_error_next_data(dump_data);
1263                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1264                 dump_data->len = cpu_to_le32(sram2_len + sizeof(*dump_mem));
1265                 dump_mem = (void *)dump_data->data;
1266                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1267                 dump_mem->offset = cpu_to_le32(mvm->cfg->dccm2_offset);
1268                 iwl_trans_read_mem_bytes(mvm->trans, mvm->cfg->dccm2_offset,
1269                                          dump_mem->data, sram2_len);
1270         }
1271
1272         if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_8000 &&
1273             CSR_HW_REV_STEP(mvm->trans->hw_rev) == SILICON_B_STEP) {
1274                 dump_data = iwl_fw_error_next_data(dump_data);
1275                 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
1276                 dump_data->len = cpu_to_le32(IWL8260_ICCM_LEN +
1277                                              sizeof(*dump_mem));
1278                 dump_mem = (void *)dump_data->data;
1279                 dump_mem->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM_SRAM);
1280                 dump_mem->offset = cpu_to_le32(IWL8260_ICCM_OFFSET);
1281                 iwl_trans_read_mem_bytes(mvm->trans, IWL8260_ICCM_OFFSET,
1282                                          dump_mem->data, IWL8260_ICCM_LEN);
1283         }
1284
1285         fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
1286         fw_error_dump->op_mode_len = file_len;
1287         if (fw_error_dump->trans_ptr)
1288                 file_len += fw_error_dump->trans_ptr->len;
1289         dump_file->file_len = cpu_to_le32(file_len);
1290
1291         dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
1292                       GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
1293
1294         clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
1295 }
1296
1297 struct iwl_mvm_dump_desc iwl_mvm_dump_desc_assert = {
1298         .trig_desc = {
1299                 .type = cpu_to_le32(FW_DBG_TRIGGER_FW_ASSERT),
1300         },
1301 };
1302
1303 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
1304 {
1305         /* clear the D3 reconfig, we only need it to avoid dumping a
1306          * firmware coredump on reconfiguration, we shouldn't do that
1307          * on D3->D0 transition
1308          */
1309         if (!test_and_clear_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status)) {
1310                 mvm->fw_dump_desc = &iwl_mvm_dump_desc_assert;
1311                 iwl_mvm_fw_error_dump(mvm);
1312         }
1313
1314         /* cleanup all stale references (scan, roc), but keep the
1315          * ucode_down ref until reconfig is complete
1316          */
1317         iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
1318
1319         iwl_trans_stop_device(mvm->trans);
1320
1321         mvm->scan_status = 0;
1322         mvm->ps_disabled = false;
1323         mvm->calibrating = false;
1324
1325         /* just in case one was running */
1326         ieee80211_remain_on_channel_expired(mvm->hw);
1327
1328         /*
1329          * cleanup all interfaces, even inactive ones, as some might have
1330          * gone down during the HW restart
1331          */
1332         ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
1333
1334         mvm->p2p_device_vif = NULL;
1335         mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1336
1337         iwl_mvm_reset_phy_ctxts(mvm);
1338         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
1339         memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
1340         memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
1341         memset(&mvm->last_bt_notif_old, 0, sizeof(mvm->last_bt_notif_old));
1342         memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
1343         memset(&mvm->last_bt_ci_cmd_old, 0, sizeof(mvm->last_bt_ci_cmd_old));
1344         memset(&mvm->bt_ack_kill_msk, 0, sizeof(mvm->bt_ack_kill_msk));
1345         memset(&mvm->bt_cts_kill_msk, 0, sizeof(mvm->bt_cts_kill_msk));
1346
1347         ieee80211_wake_queues(mvm->hw);
1348
1349         /* clear any stale d0i3 state */
1350         clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1351
1352         mvm->vif_count = 0;
1353         mvm->rx_ba_sessions = 0;
1354         mvm->fw_dbg_conf = FW_DBG_INVALID;
1355
1356         /* keep statistics ticking */
1357         iwl_mvm_accu_radio_stats(mvm);
1358 }
1359
1360 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
1361 {
1362         int ret;
1363
1364         lockdep_assert_held(&mvm->mutex);
1365
1366         /* Clean up some internal and mac80211 state on restart */
1367         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1368                 iwl_mvm_restart_cleanup(mvm);
1369
1370         ret = iwl_mvm_up(mvm);
1371
1372         if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1373                 /* Something went wrong - we need to finish some cleanup
1374                  * that normally iwl_mvm_mac_restart_complete() below
1375                  * would do.
1376                  */
1377                 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1378                 iwl_mvm_d0i3_enable_tx(mvm, NULL);
1379         }
1380
1381         return ret;
1382 }
1383
1384 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1385 {
1386         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1387         int ret;
1388
1389         /* Some hw restart cleanups must not hold the mutex */
1390         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1391                 /*
1392                  * Make sure we are out of d0i3. This is needed
1393                  * to make sure the reference accounting is correct
1394                  * (and there is no stale d0i3_exit_work).
1395                  */
1396                 wait_event_timeout(mvm->d0i3_exit_waitq,
1397                                    !test_bit(IWL_MVM_STATUS_IN_D0I3,
1398                                              &mvm->status),
1399                                    HZ);
1400         }
1401
1402         mutex_lock(&mvm->mutex);
1403         ret = __iwl_mvm_mac_start(mvm);
1404         mutex_unlock(&mvm->mutex);
1405
1406         return ret;
1407 }
1408
1409 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1410 {
1411         int ret;
1412
1413         mutex_lock(&mvm->mutex);
1414
1415         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1416         iwl_mvm_d0i3_enable_tx(mvm, NULL);
1417         ret = iwl_mvm_update_quotas(mvm, true, NULL);
1418         if (ret)
1419                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1420                         ret);
1421
1422         /* allow transport/FW low power modes */
1423         iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
1424
1425         /*
1426          * If we have TDLS peers, remove them. We don't know the last seqno/PN
1427          * of packets the FW sent out, so we must reconnect.
1428          */
1429         iwl_mvm_teardown_tdls_peers(mvm);
1430
1431         mutex_unlock(&mvm->mutex);
1432 }
1433
1434 static void iwl_mvm_resume_complete(struct iwl_mvm *mvm)
1435 {
1436         bool exit_now;
1437
1438         if (!iwl_mvm_is_d0i3_supported(mvm))
1439                 return;
1440
1441         mutex_lock(&mvm->d0i3_suspend_mutex);
1442         __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1443         exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
1444                                         &mvm->d0i3_suspend_flags);
1445         mutex_unlock(&mvm->d0i3_suspend_mutex);
1446
1447         if (exit_now) {
1448                 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
1449                 _iwl_mvm_exit_d0i3(mvm);
1450         }
1451
1452         if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND)
1453                 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
1454                                         !test_bit(IWL_MVM_STATUS_IN_D0I3,
1455                                                   &mvm->status),
1456                                         HZ))
1457                         WARN_ONCE(1, "D0i3 exit on resume timed out\n");
1458 }
1459
1460 static void
1461 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1462                               enum ieee80211_reconfig_type reconfig_type)
1463 {
1464         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1465
1466         switch (reconfig_type) {
1467         case IEEE80211_RECONFIG_TYPE_RESTART:
1468                 iwl_mvm_restart_complete(mvm);
1469                 break;
1470         case IEEE80211_RECONFIG_TYPE_SUSPEND:
1471                 iwl_mvm_resume_complete(mvm);
1472                 break;
1473         }
1474 }
1475
1476 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1477 {
1478         lockdep_assert_held(&mvm->mutex);
1479
1480         /* firmware counters are obviously reset now, but we shouldn't
1481          * partially track so also clear the fw_reset_accu counters.
1482          */
1483         memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1484
1485         /*
1486          * Disallow low power states when the FW is down by taking
1487          * the UCODE_DOWN ref. in case of ongoing hw restart the
1488          * ref is already taken, so don't take it again.
1489          */
1490         if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1491                 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1492
1493         /* async_handlers_wk is now blocked */
1494
1495         /*
1496          * The work item could be running or queued if the
1497          * ROC time event stops just as we get here.
1498          */
1499         flush_work(&mvm->roc_done_wk);
1500
1501         iwl_trans_stop_device(mvm->trans);
1502
1503         iwl_mvm_async_handlers_purge(mvm);
1504         /* async_handlers_list is empty and will stay empty: HW is stopped */
1505
1506         /* the fw is stopped, the aux sta is dead: clean up driver state */
1507         iwl_mvm_del_aux_sta(mvm);
1508
1509         /*
1510          * Clear IN_HW_RESTART flag when stopping the hw (as restart_complete()
1511          * won't be called in this case).
1512          * But make sure to cleanup interfaces that have gone down before/during
1513          * HW restart was requested.
1514          */
1515         if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1516                 ieee80211_iterate_interfaces(mvm->hw, 0,
1517                                              iwl_mvm_cleanup_iterator, mvm);
1518
1519         /* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1520          * make sure there's nothing left there and warn if any is found.
1521          */
1522         if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1523                 int i;
1524
1525                 for (i = 0; i < mvm->max_scans; i++) {
1526                         if (WARN_ONCE(mvm->scan_uid_status[i],
1527                                       "UMAC scan UID %d status was not cleaned\n",
1528                                       i))
1529                                 mvm->scan_uid_status[i] = 0;
1530                 }
1531         }
1532
1533         mvm->ucode_loaded = false;
1534 }
1535
1536 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1537 {
1538         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1539
1540         flush_work(&mvm->d0i3_exit_work);
1541         flush_work(&mvm->async_handlers_wk);
1542         cancel_delayed_work_sync(&mvm->fw_dump_wk);
1543         iwl_mvm_free_fw_dump_desc(mvm);
1544
1545         mutex_lock(&mvm->mutex);
1546         __iwl_mvm_mac_stop(mvm);
1547         mutex_unlock(&mvm->mutex);
1548
1549         /*
1550          * The worker might have been waiting for the mutex, let it run and
1551          * discover that its list is now empty.
1552          */
1553         cancel_work_sync(&mvm->async_handlers_wk);
1554 }
1555
1556 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1557 {
1558         u16 i;
1559
1560         lockdep_assert_held(&mvm->mutex);
1561
1562         for (i = 0; i < NUM_PHY_CTX; i++)
1563                 if (!mvm->phy_ctxts[i].ref)
1564                         return &mvm->phy_ctxts[i];
1565
1566         IWL_ERR(mvm, "No available PHY context\n");
1567         return NULL;
1568 }
1569
1570 static int iwl_mvm_set_tx_power_old(struct iwl_mvm *mvm,
1571                                     struct ieee80211_vif *vif, s8 tx_power)
1572 {
1573         /* FW is in charge of regulatory enforcement */
1574         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
1575                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
1576                 .pwr_restriction = cpu_to_le16(tx_power),
1577         };
1578
1579         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1580                                     sizeof(reduce_txpwr_cmd),
1581                                     &reduce_txpwr_cmd);
1582 }
1583
1584 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1585                                 s16 tx_power)
1586 {
1587         struct iwl_dev_tx_power_cmd cmd = {
1588                 .set_mode = 0,
1589                 .mac_context_id =
1590                         cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1591                 .pwr_restriction = cpu_to_le16(8 * tx_power),
1592         };
1593
1594         if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_TX_POWER_DEV))
1595                 return iwl_mvm_set_tx_power_old(mvm, vif, tx_power);
1596
1597         if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1598                 cmd.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1599
1600         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
1601                                     sizeof(cmd), &cmd);
1602 }
1603
1604 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1605                                      struct ieee80211_vif *vif)
1606 {
1607         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1608         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1609         int ret;
1610
1611         mvmvif->mvm = mvm;
1612
1613         /*
1614          * make sure D0i3 exit is completed, otherwise a target access
1615          * during tx queue configuration could be done when still in
1616          * D0i3 state.
1617          */
1618         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
1619         if (ret)
1620                 return ret;
1621
1622         /*
1623          * Not much to do here. The stack will not allow interface
1624          * types or combinations that we didn't advertise, so we
1625          * don't really have to check the types.
1626          */
1627
1628         mutex_lock(&mvm->mutex);
1629
1630         /* make sure that beacon statistics don't go backwards with FW reset */
1631         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1632                 mvmvif->beacon_stats.accu_num_beacons +=
1633                         mvmvif->beacon_stats.num_beacons;
1634
1635         /* Allocate resources for the MAC context, and add it to the fw  */
1636         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1637         if (ret)
1638                 goto out_unlock;
1639
1640         /* Counting number of interfaces is needed for legacy PM */
1641         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1642                 mvm->vif_count++;
1643
1644         /*
1645          * The AP binding flow can be done only after the beacon
1646          * template is configured (which happens only in the mac80211
1647          * start_ap() flow), and adding the broadcast station can happen
1648          * only after the binding.
1649          * In addition, since modifying the MAC before adding a bcast
1650          * station is not allowed by the FW, delay the adding of MAC context to
1651          * the point where we can also add the bcast station.
1652          * In short: there's not much we can do at this point, other than
1653          * allocating resources :)
1654          */
1655         if (vif->type == NL80211_IFTYPE_AP ||
1656             vif->type == NL80211_IFTYPE_ADHOC) {
1657                 ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1658                 if (ret) {
1659                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1660                         goto out_release;
1661                 }
1662
1663                 iwl_mvm_vif_dbgfs_register(mvm, vif);
1664                 goto out_unlock;
1665         }
1666
1667         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1668         if (ret)
1669                 goto out_release;
1670
1671         ret = iwl_mvm_power_update_mac(mvm);
1672         if (ret)
1673                 goto out_remove_mac;
1674
1675         /* beacon filtering */
1676         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1677         if (ret)
1678                 goto out_remove_mac;
1679
1680         if (!mvm->bf_allowed_vif &&
1681             vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1682                 mvm->bf_allowed_vif = mvmvif;
1683                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1684                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1685         }
1686
1687         /*
1688          * P2P_DEVICE interface does not have a channel context assigned to it,
1689          * so a dedicated PHY context is allocated to it and the corresponding
1690          * MAC context is bound to it at this stage.
1691          */
1692         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1693
1694                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1695                 if (!mvmvif->phy_ctxt) {
1696                         ret = -ENOSPC;
1697                         goto out_free_bf;
1698                 }
1699
1700                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1701                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1702                 if (ret)
1703                         goto out_unref_phy;
1704
1705                 ret = iwl_mvm_add_bcast_sta(mvm, vif);
1706                 if (ret)
1707                         goto out_unbind;
1708
1709                 /* Save a pointer to p2p device vif, so it can later be used to
1710                  * update the p2p device MAC when a GO is started/stopped */
1711                 mvm->p2p_device_vif = vif;
1712         }
1713
1714         iwl_mvm_vif_dbgfs_register(mvm, vif);
1715         goto out_unlock;
1716
1717  out_unbind:
1718         iwl_mvm_binding_remove_vif(mvm, vif);
1719  out_unref_phy:
1720         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1721  out_free_bf:
1722         if (mvm->bf_allowed_vif == mvmvif) {
1723                 mvm->bf_allowed_vif = NULL;
1724                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1725                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1726         }
1727  out_remove_mac:
1728         mvmvif->phy_ctxt = NULL;
1729         iwl_mvm_mac_ctxt_remove(mvm, vif);
1730  out_release:
1731         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1732                 mvm->vif_count--;
1733
1734         iwl_mvm_mac_ctxt_release(mvm, vif);
1735  out_unlock:
1736         mutex_unlock(&mvm->mutex);
1737
1738         iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1739
1740         return ret;
1741 }
1742
1743 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1744                                         struct ieee80211_vif *vif)
1745 {
1746         u32 tfd_msk = iwl_mvm_mac_get_queues_mask(vif);
1747
1748         if (tfd_msk) {
1749                 /*
1750                  * mac80211 first removes all the stations of the vif and
1751                  * then removes the vif. When it removes a station it also
1752                  * flushes the AMPDU session. So by now, all the AMPDU sessions
1753                  * of all the stations of this vif are closed, and the queues
1754                  * of these AMPDU sessions are properly closed.
1755                  * We still need to take care of the shared queues of the vif.
1756                  * Flush them here.
1757                  */
1758                 mutex_lock(&mvm->mutex);
1759                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1760                 mutex_unlock(&mvm->mutex);
1761
1762                 /*
1763                  * There are transports that buffer a few frames in the host.
1764                  * For these, the flush above isn't enough since while we were
1765                  * flushing, the transport might have sent more frames to the
1766                  * device. To solve this, wait here until the transport is
1767                  * empty. Technically, this could have replaced the flush
1768                  * above, but flush is much faster than draining. So flush
1769                  * first, and drain to make sure we have no frames in the
1770                  * transport anymore.
1771                  * If a station still had frames on the shared queues, it is
1772                  * already marked as draining, so to complete the draining, we
1773                  * just need to wait until the transport is empty.
1774                  */
1775                 iwl_trans_wait_tx_queue_empty(mvm->trans, tfd_msk);
1776         }
1777
1778         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1779                 /*
1780                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
1781                  * We assume here that all the packets sent to the OFFCHANNEL
1782                  * queue are sent in ROC session.
1783                  */
1784                 flush_work(&mvm->roc_done_wk);
1785         } else {
1786                 /*
1787                  * By now, all the AC queues are empty. The AGG queues are
1788                  * empty too. We already got all the Tx responses for all the
1789                  * packets in the queues. The drain work can have been
1790                  * triggered. Flush it.
1791                  */
1792                 flush_work(&mvm->sta_drained_wk);
1793         }
1794 }
1795
1796 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1797                                          struct ieee80211_vif *vif)
1798 {
1799         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1800         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1801
1802         iwl_mvm_prepare_mac_removal(mvm, vif);
1803
1804         mutex_lock(&mvm->mutex);
1805
1806         if (mvm->bf_allowed_vif == mvmvif) {
1807                 mvm->bf_allowed_vif = NULL;
1808                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1809                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1810         }
1811
1812         iwl_mvm_vif_dbgfs_clean(mvm, vif);
1813
1814         /*
1815          * For AP/GO interface, the tear down of the resources allocated to the
1816          * interface is be handled as part of the stop_ap flow.
1817          */
1818         if (vif->type == NL80211_IFTYPE_AP ||
1819             vif->type == NL80211_IFTYPE_ADHOC) {
1820 #ifdef CONFIG_NL80211_TESTMODE
1821                 if (vif == mvm->noa_vif) {
1822                         mvm->noa_vif = NULL;
1823                         mvm->noa_duration = 0;
1824                 }
1825 #endif
1826                 iwl_mvm_dealloc_bcast_sta(mvm, vif);
1827                 goto out_release;
1828         }
1829
1830         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1831                 mvm->p2p_device_vif = NULL;
1832                 iwl_mvm_rm_bcast_sta(mvm, vif);
1833                 iwl_mvm_binding_remove_vif(mvm, vif);
1834                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1835                 mvmvif->phy_ctxt = NULL;
1836         }
1837
1838         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
1839                 mvm->vif_count--;
1840
1841         iwl_mvm_power_update_mac(mvm);
1842         iwl_mvm_mac_ctxt_remove(mvm, vif);
1843
1844 out_release:
1845         iwl_mvm_mac_ctxt_release(mvm, vif);
1846         mutex_unlock(&mvm->mutex);
1847 }
1848
1849 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1850 {
1851         return 0;
1852 }
1853
1854 struct iwl_mvm_mc_iter_data {
1855         struct iwl_mvm *mvm;
1856         int port_id;
1857 };
1858
1859 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1860                                       struct ieee80211_vif *vif)
1861 {
1862         struct iwl_mvm_mc_iter_data *data = _data;
1863         struct iwl_mvm *mvm = data->mvm;
1864         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1865         int ret, len;
1866
1867         /* if we don't have free ports, mcast frames will be dropped */
1868         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1869                 return;
1870
1871         if (vif->type != NL80211_IFTYPE_STATION ||
1872             !vif->bss_conf.assoc)
1873                 return;
1874
1875         cmd->port_id = data->port_id++;
1876         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1877         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1878
1879         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
1880         if (ret)
1881                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1882 }
1883
1884 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1885 {
1886         struct iwl_mvm_mc_iter_data iter_data = {
1887                 .mvm = mvm,
1888         };
1889
1890         lockdep_assert_held(&mvm->mutex);
1891
1892         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1893                 return;
1894
1895         ieee80211_iterate_active_interfaces_atomic(
1896                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1897                 iwl_mvm_mc_iface_iterator, &iter_data);
1898 }
1899
1900 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1901                                      struct netdev_hw_addr_list *mc_list)
1902 {
1903         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1904         struct iwl_mcast_filter_cmd *cmd;
1905         struct netdev_hw_addr *addr;
1906         int addr_count;
1907         bool pass_all;
1908         int len;
1909
1910         addr_count = netdev_hw_addr_list_count(mc_list);
1911         pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1912                    IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1913         if (pass_all)
1914                 addr_count = 0;
1915
1916         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1917         cmd = kzalloc(len, GFP_ATOMIC);
1918         if (!cmd)
1919                 return 0;
1920
1921         if (pass_all) {
1922                 cmd->pass_all = 1;
1923                 return (u64)(unsigned long)cmd;
1924         }
1925
1926         netdev_hw_addr_list_for_each(addr, mc_list) {
1927                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1928                                    cmd->count, addr->addr);
1929                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1930                        addr->addr, ETH_ALEN);
1931                 cmd->count++;
1932         }
1933
1934         return (u64)(unsigned long)cmd;
1935 }
1936
1937 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1938                                      unsigned int changed_flags,
1939                                      unsigned int *total_flags,
1940                                      u64 multicast)
1941 {
1942         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1943         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1944
1945         mutex_lock(&mvm->mutex);
1946
1947         /* replace previous configuration */
1948         kfree(mvm->mcast_filter_cmd);
1949         mvm->mcast_filter_cmd = cmd;
1950
1951         if (!cmd)
1952                 goto out;
1953
1954         iwl_mvm_recalc_multicast(mvm);
1955 out:
1956         mutex_unlock(&mvm->mutex);
1957         *total_flags = 0;
1958 }
1959
1960 #ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1961 struct iwl_bcast_iter_data {
1962         struct iwl_mvm *mvm;
1963         struct iwl_bcast_filter_cmd *cmd;
1964         u8 current_filter;
1965 };
1966
1967 static void
1968 iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1969                          const struct iwl_fw_bcast_filter *in_filter,
1970                          struct iwl_fw_bcast_filter *out_filter)
1971 {
1972         struct iwl_fw_bcast_filter_attr *attr;
1973         int i;
1974
1975         memcpy(out_filter, in_filter, sizeof(*out_filter));
1976
1977         for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1978                 attr = &out_filter->attrs[i];
1979
1980                 if (!attr->mask)
1981                         break;
1982
1983                 switch (attr->reserved1) {
1984                 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1985                         if (vif->bss_conf.arp_addr_cnt != 1) {
1986                                 attr->mask = 0;
1987                                 continue;
1988                         }
1989
1990                         attr->val = vif->bss_conf.arp_addr_list[0];
1991                         break;
1992                 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1993                         attr->val = *(__be32 *)&vif->addr[2];
1994                         break;
1995                 default:
1996                         break;
1997                 }
1998                 attr->reserved1 = 0;
1999                 out_filter->num_attrs++;
2000         }
2001 }
2002
2003 static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
2004                                           struct ieee80211_vif *vif)
2005 {
2006         struct iwl_bcast_iter_data *data = _data;
2007         struct iwl_mvm *mvm = data->mvm;
2008         struct iwl_bcast_filter_cmd *cmd = data->cmd;
2009         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2010         struct iwl_fw_bcast_mac *bcast_mac;
2011         int i;
2012
2013         if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
2014                 return;
2015
2016         bcast_mac = &cmd->macs[mvmvif->id];
2017
2018         /*
2019          * enable filtering only for associated stations, but not for P2P
2020          * Clients
2021          */
2022         if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
2023             !vif->bss_conf.assoc)
2024                 return;
2025
2026         bcast_mac->default_discard = 1;
2027
2028         /* copy all configured filters */
2029         for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
2030                 /*
2031                  * Make sure we don't exceed our filters limit.
2032                  * if there is still a valid filter to be configured,
2033                  * be on the safe side and just allow bcast for this mac.
2034                  */
2035                 if (WARN_ON_ONCE(data->current_filter >=
2036                                  ARRAY_SIZE(cmd->filters))) {
2037                         bcast_mac->default_discard = 0;
2038                         bcast_mac->attached_filters = 0;
2039                         break;
2040                 }
2041
2042                 iwl_mvm_set_bcast_filter(vif,
2043                                          &mvm->bcast_filters[i],
2044                                          &cmd->filters[data->current_filter]);
2045
2046                 /* skip current filter if it contains no attributes */
2047                 if (!cmd->filters[data->current_filter].num_attrs)
2048                         continue;
2049
2050                 /* attach the filter to current mac */
2051                 bcast_mac->attached_filters |=
2052                                 cpu_to_le16(BIT(data->current_filter));
2053
2054                 data->current_filter++;
2055         }
2056 }
2057
2058 bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
2059                                     struct iwl_bcast_filter_cmd *cmd)
2060 {
2061         struct iwl_bcast_iter_data iter_data = {
2062                 .mvm = mvm,
2063                 .cmd = cmd,
2064         };
2065
2066         if (IWL_MVM_FW_BCAST_FILTER_PASS_ALL)
2067                 return false;
2068
2069         memset(cmd, 0, sizeof(*cmd));
2070         cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
2071         cmd->max_macs = ARRAY_SIZE(cmd->macs);
2072
2073 #ifdef CONFIG_IWLWIFI_DEBUGFS
2074         /* use debugfs filters/macs if override is configured */
2075         if (mvm->dbgfs_bcast_filtering.override) {
2076                 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
2077                        sizeof(cmd->filters));
2078                 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
2079                        sizeof(cmd->macs));
2080                 return true;
2081         }
2082 #endif
2083
2084         /* if no filters are configured, do nothing */
2085         if (!mvm->bcast_filters)
2086                 return false;
2087
2088         /* configure and attach these filters for each associated sta vif */
2089         ieee80211_iterate_active_interfaces(
2090                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2091                 iwl_mvm_bcast_filter_iterator, &iter_data);
2092
2093         return true;
2094 }
2095 static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2096                                           struct ieee80211_vif *vif)
2097 {
2098         struct iwl_bcast_filter_cmd cmd;
2099
2100         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
2101                 return 0;
2102
2103         if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
2104                 return 0;
2105
2106         return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
2107                                     sizeof(cmd), &cmd);
2108 }
2109 #else
2110 static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
2111                                                  struct ieee80211_vif *vif)
2112 {
2113         return 0;
2114 }
2115 #endif
2116
2117 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2118                                              struct ieee80211_vif *vif,
2119                                              struct ieee80211_bss_conf *bss_conf,
2120                                              u32 changes)
2121 {
2122         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2123         int ret;
2124
2125         /*
2126          * Re-calculate the tsf id, as the master-slave relations depend on the
2127          * beacon interval, which was not known when the station interface was
2128          * added.
2129          */
2130         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
2131                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2132
2133         /*
2134          * If we're not associated yet, take the (new) BSSID before associating
2135          * so the firmware knows. If we're already associated, then use the old
2136          * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2137          * branch for disassociation below.
2138          */
2139         if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2140                 memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2141
2142         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2143         if (ret)
2144                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2145
2146         /* after sending it once, adopt mac80211 data */
2147         memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2148         mvmvif->associated = bss_conf->assoc;
2149
2150         if (changes & BSS_CHANGED_ASSOC) {
2151                 if (bss_conf->assoc) {
2152                         /* clear statistics to get clean beacon counter */
2153                         iwl_mvm_request_statistics(mvm, true);
2154                         memset(&mvmvif->beacon_stats, 0,
2155                                sizeof(mvmvif->beacon_stats));
2156
2157                         /* add quota for this interface */
2158                         ret = iwl_mvm_update_quotas(mvm, true, NULL);
2159                         if (ret) {
2160                                 IWL_ERR(mvm, "failed to update quotas\n");
2161                                 return;
2162                         }
2163
2164                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2165                                      &mvm->status)) {
2166                                 /*
2167                                  * If we're restarting then the firmware will
2168                                  * obviously have lost synchronisation with
2169                                  * the AP. It will attempt to synchronise by
2170                                  * itself, but we can make it more reliable by
2171                                  * scheduling a session protection time event.
2172                                  *
2173                                  * The firmware needs to receive a beacon to
2174                                  * catch up with synchronisation, use 110% of
2175                                  * the beacon interval.
2176                                  *
2177                                  * Set a large maximum delay to allow for more
2178                                  * than a single interface.
2179                                  */
2180                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2181                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
2182                                                         5 * dur, false);
2183                         }
2184
2185                         iwl_mvm_sf_update(mvm, vif, false);
2186                         iwl_mvm_power_vif_assoc(mvm, vif);
2187                         if (vif->p2p) {
2188                                 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
2189                                 iwl_mvm_update_smps(mvm, vif,
2190                                                     IWL_MVM_SMPS_REQ_PROT,
2191                                                     IEEE80211_SMPS_DYNAMIC);
2192                         }
2193                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
2194                         /*
2195                          * If update fails - SF might be running in associated
2196                          * mode while disassociated - which is forbidden.
2197                          */
2198                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
2199                                   "Failed to update SF upon disassociation\n");
2200
2201                         /* remove AP station now that the MAC is unassoc */
2202                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
2203                         if (ret)
2204                                 IWL_ERR(mvm, "failed to remove AP station\n");
2205
2206                         if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
2207                                 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
2208                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
2209                         /* remove quota for this interface */
2210                         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2211                         if (ret)
2212                                 IWL_ERR(mvm, "failed to update quotas\n");
2213
2214                         if (vif->p2p)
2215                                 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
2216
2217                         /* this will take the cleared BSSID from bss_conf */
2218                         ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2219                         if (ret)
2220                                 IWL_ERR(mvm,
2221                                         "failed to update MAC %pM (clear after unassoc)\n",
2222                                         vif->addr);
2223                 }
2224
2225                 iwl_mvm_recalc_multicast(mvm);
2226                 iwl_mvm_configure_bcast_filter(mvm, vif);
2227
2228                 /* reset rssi values */
2229                 mvmvif->bf_data.ave_beacon_signal = 0;
2230
2231                 iwl_mvm_bt_coex_vif_change(mvm);
2232                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2233                                     IEEE80211_SMPS_AUTOMATIC);
2234         } else if (changes & BSS_CHANGED_BEACON_INFO) {
2235                 /*
2236                  * We received a beacon _after_ association so
2237                  * remove the session protection.
2238                  */
2239                 iwl_mvm_remove_time_event(mvm, mvmvif,
2240                                           &mvmvif->time_event_data);
2241         }
2242
2243         if (changes & BSS_CHANGED_BEACON_INFO) {
2244                 iwl_mvm_sf_update(mvm, vif, false);
2245                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2246         }
2247
2248         if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS)) {
2249                 ret = iwl_mvm_power_update_mac(mvm);
2250                 if (ret)
2251                         IWL_ERR(mvm, "failed to update power mode\n");
2252         }
2253
2254         if (changes & BSS_CHANGED_TXPOWER) {
2255                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2256                                 bss_conf->txpower);
2257                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2258         }
2259
2260         if (changes & BSS_CHANGED_CQM) {
2261                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2262                 /* reset cqm events tracking */
2263                 mvmvif->bf_data.last_cqm_event = 0;
2264                 if (mvmvif->bf_data.bf_enabled) {
2265                         ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2266                         if (ret)
2267                                 IWL_ERR(mvm,
2268                                         "failed to update CQM thresholds\n");
2269                 }
2270         }
2271
2272         if (changes & BSS_CHANGED_ARP_FILTER) {
2273                 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2274                 iwl_mvm_configure_bcast_filter(mvm, vif);
2275         }
2276 }
2277
2278 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2279                                  struct ieee80211_vif *vif)
2280 {
2281         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2282         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2283         int ret;
2284
2285         /*
2286          * iwl_mvm_mac_ctxt_add() might read directly from the device
2287          * (the system time), so make sure it is available.
2288          */
2289         ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_START_AP);
2290         if (ret)
2291                 return ret;
2292
2293         mutex_lock(&mvm->mutex);
2294
2295         /* Send the beacon template */
2296         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2297         if (ret)
2298                 goto out_unlock;
2299
2300         /*
2301          * Re-calculate the tsf id, as the master-slave relations depend on the
2302          * beacon interval, which was not known when the AP interface was added.
2303          */
2304         if (vif->type == NL80211_IFTYPE_AP)
2305                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2306
2307         /* Add the mac context */
2308         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2309         if (ret)
2310                 goto out_unlock;
2311
2312         /* Perform the binding */
2313         ret = iwl_mvm_binding_add_vif(mvm, vif);
2314         if (ret)
2315                 goto out_remove;
2316
2317         /* Send the bcast station. At this stage the TBTT and DTIM time events
2318          * are added and applied to the scheduler */
2319         ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2320         if (ret)
2321                 goto out_unbind;
2322
2323         /* must be set before quota calculations */
2324         mvmvif->ap_ibss_active = true;
2325
2326         /* power updated needs to be done before quotas */
2327         iwl_mvm_power_update_mac(mvm);
2328
2329         ret = iwl_mvm_update_quotas(mvm, false, NULL);
2330         if (ret)
2331                 goto out_quota_failed;
2332
2333         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2334         if (vif->p2p && mvm->p2p_device_vif)
2335                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2336
2337         iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
2338
2339         iwl_mvm_bt_coex_vif_change(mvm);
2340
2341         /* we don't support TDLS during DCM */
2342         if (iwl_mvm_phy_ctx_count(mvm) > 1)
2343                 iwl_mvm_teardown_tdls_peers(mvm);
2344
2345         goto out_unlock;
2346
2347 out_quota_failed:
2348         iwl_mvm_power_update_mac(mvm);
2349         mvmvif->ap_ibss_active = false;
2350         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2351 out_unbind:
2352         iwl_mvm_binding_remove_vif(mvm, vif);
2353 out_remove:
2354         iwl_mvm_mac_ctxt_remove(mvm, vif);
2355 out_unlock:
2356         mutex_unlock(&mvm->mutex);
2357         iwl_mvm_unref(mvm, IWL_MVM_REF_START_AP);
2358         return ret;
2359 }
2360
2361 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2362                                  struct ieee80211_vif *vif)
2363 {
2364         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2365         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2366
2367         iwl_mvm_prepare_mac_removal(mvm, vif);
2368
2369         mutex_lock(&mvm->mutex);
2370
2371         /* Handle AP stop while in CSA */
2372         if (rcu_access_pointer(mvm->csa_vif) == vif) {
2373                 iwl_mvm_remove_time_event(mvm, mvmvif,
2374                                           &mvmvif->time_event_data);
2375                 RCU_INIT_POINTER(mvm->csa_vif, NULL);
2376         }
2377
2378         if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2379                 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2380                 mvm->csa_tx_block_bcn_timeout = 0;
2381         }
2382
2383         mvmvif->ap_ibss_active = false;
2384         mvm->ap_last_beacon_gp2 = 0;
2385
2386         iwl_mvm_bt_coex_vif_change(mvm);
2387
2388         iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
2389
2390         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2391         if (vif->p2p && mvm->p2p_device_vif)
2392                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2393
2394         iwl_mvm_update_quotas(mvm, false, NULL);
2395         iwl_mvm_send_rm_bcast_sta(mvm, vif);
2396         iwl_mvm_binding_remove_vif(mvm, vif);
2397
2398         iwl_mvm_power_update_mac(mvm);
2399
2400         iwl_mvm_mac_ctxt_remove(mvm, vif);
2401
2402         mutex_unlock(&mvm->mutex);
2403 }
2404
2405 static void
2406 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2407                                  struct ieee80211_vif *vif,
2408                                  struct ieee80211_bss_conf *bss_conf,
2409                                  u32 changes)
2410 {
2411         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2412
2413         /* Changes will be applied when the AP/IBSS is started */
2414         if (!mvmvif->ap_ibss_active)
2415                 return;
2416
2417         if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2418                        BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2419             iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2420                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2421
2422         /* Need to send a new beacon template to the FW */
2423         if (changes & BSS_CHANGED_BEACON &&
2424             iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2425                 IWL_WARN(mvm, "Failed updating beacon data\n");
2426
2427         if (changes & BSS_CHANGED_TXPOWER) {
2428                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
2429                                 bss_conf->txpower);
2430                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2431         }
2432
2433 }
2434
2435 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2436                                      struct ieee80211_vif *vif,
2437                                      struct ieee80211_bss_conf *bss_conf,
2438                                      u32 changes)
2439 {
2440         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2441
2442         /*
2443          * iwl_mvm_bss_info_changed_station() might call
2444          * iwl_mvm_protect_session(), which reads directly from
2445          * the device (the system time), so make sure it is available.
2446          */
2447         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_BSS_CHANGED))
2448                 return;
2449
2450         mutex_lock(&mvm->mutex);
2451
2452         if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
2453                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2454
2455         switch (vif->type) {
2456         case NL80211_IFTYPE_STATION:
2457                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2458                 break;
2459         case NL80211_IFTYPE_AP:
2460         case NL80211_IFTYPE_ADHOC:
2461                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2462                 break;
2463         default:
2464                 /* shouldn't happen */
2465                 WARN_ON_ONCE(1);
2466         }
2467
2468         mutex_unlock(&mvm->mutex);
2469         iwl_mvm_unref(mvm, IWL_MVM_REF_BSS_CHANGED);
2470 }
2471
2472 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2473                                struct ieee80211_vif *vif,
2474                                struct ieee80211_scan_request *hw_req)
2475 {
2476         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2477         int ret;
2478
2479         if (hw_req->req.n_channels == 0 ||
2480             hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2481                 return -EINVAL;
2482
2483         mutex_lock(&mvm->mutex);
2484         ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2485         mutex_unlock(&mvm->mutex);
2486
2487         return ret;
2488 }
2489
2490 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2491                                        struct ieee80211_vif *vif)
2492 {
2493         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2494
2495         mutex_lock(&mvm->mutex);
2496
2497         /* Due to a race condition, it's possible that mac80211 asks
2498          * us to stop a hw_scan when it's already stopped.  This can
2499          * happen, for instance, if we stopped the scan ourselves,
2500          * called ieee80211_scan_completed() and the userspace called
2501          * cancel scan scan before ieee80211_scan_work() could run.
2502          * To handle that, simply return if the scan is not running.
2503         */
2504         if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2505                 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2506
2507         mutex_unlock(&mvm->mutex);
2508 }
2509
2510 static void
2511 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2512                                   struct ieee80211_sta *sta, u16 tids,
2513                                   int num_frames,
2514                                   enum ieee80211_frame_release_type reason,
2515                                   bool more_data)
2516 {
2517         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2518
2519         /* Called when we need to transmit (a) frame(s) from mac80211 */
2520
2521         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2522                                           tids, more_data, false);
2523 }
2524
2525 static void
2526 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2527                                     struct ieee80211_sta *sta, u16 tids,
2528                                     int num_frames,
2529                                     enum ieee80211_frame_release_type reason,
2530                                     bool more_data)
2531 {
2532         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2533
2534         /* Called when we need to transmit (a) frame(s) from agg queue */
2535
2536         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2537                                           tids, more_data, true);
2538 }
2539
2540 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2541                                    struct ieee80211_vif *vif,
2542                                    enum sta_notify_cmd cmd,
2543                                    struct ieee80211_sta *sta)
2544 {
2545         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2546         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2547         unsigned long txqs = 0, tids = 0;
2548         int tid;
2549
2550         spin_lock_bh(&mvmsta->lock);
2551         for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
2552                 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2553
2554                 if (tid_data->state != IWL_AGG_ON &&
2555                     tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
2556                         continue;
2557
2558                 __set_bit(tid_data->txq_id, &txqs);
2559
2560                 if (iwl_mvm_tid_queued(tid_data) == 0)
2561                         continue;
2562
2563                 __set_bit(tid, &tids);
2564         }
2565
2566         switch (cmd) {
2567         case STA_NOTIFY_SLEEP:
2568                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
2569                         ieee80211_sta_block_awake(hw, sta, true);
2570
2571                 for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2572                         ieee80211_sta_set_buffered(sta, tid, true);
2573
2574                 if (txqs)
2575                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2576                 /*
2577                  * The fw updates the STA to be asleep. Tx packets on the Tx
2578                  * queues to this station will not be transmitted. The fw will
2579                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2580                  */
2581                 break;
2582         case STA_NOTIFY_AWAKE:
2583                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
2584                         break;
2585
2586                 if (txqs)
2587                         iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2588                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
2589                 break;
2590         default:
2591                 break;
2592         }
2593         spin_unlock_bh(&mvmsta->lock);
2594 }
2595
2596 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2597                                        struct ieee80211_vif *vif,
2598                                        struct ieee80211_sta *sta)
2599 {
2600         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2601         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2602
2603         /*
2604          * This is called before mac80211 does RCU synchronisation,
2605          * so here we already invalidate our internal RCU-protected
2606          * station pointer. The rest of the code will thus no longer
2607          * be able to find the station this way, and we don't rely
2608          * on further RCU synchronisation after the sta_state()
2609          * callback deleted the station.
2610          */
2611         mutex_lock(&mvm->mutex);
2612         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2613                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2614                                    ERR_PTR(-ENOENT));
2615         mutex_unlock(&mvm->mutex);
2616 }
2617
2618 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2619                                 const u8 *bssid)
2620 {
2621         if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2622                 return;
2623
2624         if (iwlwifi_mod_params.uapsd_disable) {
2625                 vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2626                 return;
2627         }
2628
2629         vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2630 }
2631
2632 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
2633                                  struct ieee80211_vif *vif,
2634                                  struct ieee80211_sta *sta,
2635                                  enum ieee80211_sta_state old_state,
2636                                  enum ieee80211_sta_state new_state)
2637 {
2638         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2639         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2640         int ret;
2641
2642         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
2643                            sta->addr, old_state, new_state);
2644
2645         /* this would be a mac80211 bug ... but don't crash */
2646         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
2647                 return -EINVAL;
2648
2649         /* if a STA is being removed, reuse its ID */
2650         flush_work(&mvm->sta_drained_wk);
2651
2652         mutex_lock(&mvm->mutex);
2653         if (old_state == IEEE80211_STA_NOTEXIST &&
2654             new_state == IEEE80211_STA_NONE) {
2655                 /*
2656                  * Firmware bug - it'll crash if the beacon interval is less
2657                  * than 16. We can't avoid connecting at all, so refuse the
2658                  * station state change, this will cause mac80211 to abandon
2659                  * attempts to connect to this AP, and eventually wpa_s will
2660                  * blacklist the AP...
2661                  */
2662                 if (vif->type == NL80211_IFTYPE_STATION &&
2663                     vif->bss_conf.beacon_int < 16) {
2664                         IWL_ERR(mvm,
2665                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
2666                                 sta->addr, vif->bss_conf.beacon_int);
2667                         ret = -EINVAL;
2668                         goto out_unlock;
2669                 }
2670
2671                 if (sta->tdls &&
2672                     (vif->p2p ||
2673                      iwl_mvm_tdls_sta_count(mvm, NULL) ==
2674                                                 IWL_MVM_TDLS_STA_COUNT ||
2675                      iwl_mvm_phy_ctx_count(mvm) > 1)) {
2676                         IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
2677                         ret = -EBUSY;
2678                         goto out_unlock;
2679                 }
2680
2681                 ret = iwl_mvm_add_sta(mvm, vif, sta);
2682                 if (sta->tdls && ret == 0)
2683                         iwl_mvm_recalc_tdls_state(mvm, vif, true);
2684         } else if (old_state == IEEE80211_STA_NONE &&
2685                    new_state == IEEE80211_STA_AUTH) {
2686                 /*
2687                  * EBS may be disabled due to previous failures reported by FW.
2688                  * Reset EBS status here assuming environment has been changed.
2689                  */
2690                 mvm->last_ebs_successful = true;
2691                 iwl_mvm_check_uapsd(mvm, vif, sta->addr);
2692                 ret = 0;
2693         } else if (old_state == IEEE80211_STA_AUTH &&
2694                    new_state == IEEE80211_STA_ASSOC) {
2695                 ret = iwl_mvm_update_sta(mvm, vif, sta);
2696                 if (ret == 0)
2697                         iwl_mvm_rs_rate_init(mvm, sta,
2698                                              mvmvif->phy_ctxt->channel->band,
2699                                              true);
2700         } else if (old_state == IEEE80211_STA_ASSOC &&
2701                    new_state == IEEE80211_STA_AUTHORIZED) {
2702
2703                 /* we don't support TDLS during DCM */
2704                 if (iwl_mvm_phy_ctx_count(mvm) > 1)
2705                         iwl_mvm_teardown_tdls_peers(mvm);
2706
2707                 /* enable beacon filtering */
2708                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2709                 ret = 0;
2710         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
2711                    new_state == IEEE80211_STA_ASSOC) {
2712                 /* disable beacon filtering */
2713                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
2714                 ret = 0;
2715         } else if (old_state == IEEE80211_STA_ASSOC &&
2716                    new_state == IEEE80211_STA_AUTH) {
2717                 ret = 0;
2718         } else if (old_state == IEEE80211_STA_AUTH &&
2719                    new_state == IEEE80211_STA_NONE) {
2720                 ret = 0;
2721         } else if (old_state == IEEE80211_STA_NONE &&
2722                    new_state == IEEE80211_STA_NOTEXIST) {
2723                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
2724                 if (sta->tdls)
2725                         iwl_mvm_recalc_tdls_state(mvm, vif, false);
2726         } else {
2727                 ret = -EIO;
2728         }
2729  out_unlock:
2730         mutex_unlock(&mvm->mutex);
2731
2732         if (sta->tdls && ret == 0) {
2733                 if (old_state == IEEE80211_STA_NOTEXIST &&
2734                     new_state == IEEE80211_STA_NONE)
2735                         ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2736                 else if (old_state == IEEE80211_STA_NONE &&
2737                          new_state == IEEE80211_STA_NOTEXIST)
2738                         ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
2739         }
2740
2741         return ret;
2742 }
2743
2744 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2745 {
2746         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2747
2748         mvm->rts_threshold = value;
2749
2750         return 0;
2751 }
2752
2753 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
2754                                   struct ieee80211_vif *vif,
2755                                   struct ieee80211_sta *sta, u32 changed)
2756 {
2757         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2758
2759         if (vif->type == NL80211_IFTYPE_STATION &&
2760             changed & IEEE80211_RC_NSS_CHANGED)
2761                 iwl_mvm_sf_update(mvm, vif, false);
2762 }
2763
2764 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
2765                                struct ieee80211_vif *vif, u16 ac,
2766                                const struct ieee80211_tx_queue_params *params)
2767 {
2768         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2769         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2770
2771         mvmvif->queue_params[ac] = *params;
2772
2773         /*
2774          * No need to update right away, we'll get BSS_CHANGED_QOS
2775          * The exception is P2P_DEVICE interface which needs immediate update.
2776          */
2777         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2778                 int ret;
2779
2780                 mutex_lock(&mvm->mutex);
2781                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2782                 mutex_unlock(&mvm->mutex);
2783                 return ret;
2784         }
2785         return 0;
2786 }
2787
2788 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2789                                       struct ieee80211_vif *vif)
2790 {
2791         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2792         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2793                            200 + vif->bss_conf.beacon_int);
2794         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2795                                100 + vif->bss_conf.beacon_int);
2796
2797         if (WARN_ON_ONCE(vif->bss_conf.assoc))
2798                 return;
2799
2800         /*
2801          * iwl_mvm_protect_session() reads directly from the device
2802          * (the system time), so make sure it is available.
2803          */
2804         if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PREPARE_TX))
2805                 return;
2806
2807         mutex_lock(&mvm->mutex);
2808         /* Try really hard to protect the session and hear a beacon */
2809         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500, false);
2810         mutex_unlock(&mvm->mutex);
2811
2812         iwl_mvm_unref(mvm, IWL_MVM_REF_PREPARE_TX);
2813 }
2814
2815 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2816                                         struct ieee80211_vif *vif,
2817                                         struct cfg80211_sched_scan_request *req,
2818                                         struct ieee80211_scan_ies *ies)
2819 {
2820         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2821
2822         int ret;
2823
2824         mutex_lock(&mvm->mutex);
2825
2826         if (!vif->bss_conf.idle) {
2827                 ret = -EBUSY;
2828                 goto out;
2829         }
2830
2831         ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
2832
2833 out:
2834         mutex_unlock(&mvm->mutex);
2835         return ret;
2836 }
2837
2838 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2839                                        struct ieee80211_vif *vif)
2840 {
2841         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2842         int ret;
2843
2844         mutex_lock(&mvm->mutex);
2845
2846         /* Due to a race condition, it's possible that mac80211 asks
2847          * us to stop a sched_scan when it's already stopped.  This
2848          * can happen, for instance, if we stopped the scan ourselves,
2849          * called ieee80211_sched_scan_stopped() and the userspace called
2850          * stop sched scan scan before ieee80211_sched_scan_stopped_work()
2851          * could run.  To handle this, simply return if the scan is
2852          * not running.
2853         */
2854         if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
2855                 mutex_unlock(&mvm->mutex);
2856                 return 0;
2857         }
2858
2859         ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
2860         mutex_unlock(&mvm->mutex);
2861         iwl_mvm_wait_for_async_handlers(mvm);
2862
2863         return ret;
2864 }
2865
2866 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2867                                enum set_key_cmd cmd,
2868                                struct ieee80211_vif *vif,
2869                                struct ieee80211_sta *sta,
2870                                struct ieee80211_key_conf *key)
2871 {
2872         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2873         int ret;
2874
2875         if (iwlwifi_mod_params.sw_crypto) {
2876                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2877                 return -EOPNOTSUPP;
2878         }
2879
2880         switch (key->cipher) {
2881         case WLAN_CIPHER_SUITE_TKIP:
2882                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2883                 /* fall-through */
2884         case WLAN_CIPHER_SUITE_CCMP:
2885                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2886                 break;
2887         case WLAN_CIPHER_SUITE_AES_CMAC:
2888                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2889                 break;
2890         case WLAN_CIPHER_SUITE_WEP40:
2891         case WLAN_CIPHER_SUITE_WEP104:
2892                 /* For non-client mode, only use WEP keys for TX as we probably
2893                  * don't have a station yet anyway and would then have to keep
2894                  * track of the keys, linking them to each of the clients/peers
2895                  * as they appear. For now, don't do that, for performance WEP
2896                  * offload doesn't really matter much, but we need it for some
2897                  * other offload features in client mode.
2898                  */
2899                 if (vif->type != NL80211_IFTYPE_STATION)
2900                         return 0;
2901                 break;
2902         default:
2903                 /* currently FW supports only one optional cipher scheme */
2904                 if (hw->n_cipher_schemes &&
2905                     hw->cipher_schemes->cipher == key->cipher)
2906                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2907                 else
2908                         return -EOPNOTSUPP;
2909         }
2910
2911         mutex_lock(&mvm->mutex);
2912
2913         switch (cmd) {
2914         case SET_KEY:
2915                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2916                      vif->type == NL80211_IFTYPE_AP) && !sta) {
2917                         /*
2918                          * GTK on AP interface is a TX-only key, return 0;
2919                          * on IBSS they're per-station and because we're lazy
2920                          * we don't support them for RX, so do the same.
2921                          */
2922                         ret = 0;
2923                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2924                         break;
2925                 }
2926
2927                 /* During FW restart, in order to restore the state as it was,
2928                  * don't try to reprogram keys we previously failed for.
2929                  */
2930                 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2931                     key->hw_key_idx == STA_KEY_IDX_INVALID) {
2932                         IWL_DEBUG_MAC80211(mvm,
2933                                            "skip invalid idx key programming during restart\n");
2934                         ret = 0;
2935                         break;
2936                 }
2937
2938                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2939                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key,
2940                                           test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2941                                                    &mvm->status));
2942                 if (ret) {
2943                         IWL_WARN(mvm, "set key failed\n");
2944                         /*
2945                          * can't add key for RX, but we don't need it
2946                          * in the device for TX so still return 0
2947                          */
2948                         key->hw_key_idx = STA_KEY_IDX_INVALID;
2949                         ret = 0;
2950                 }
2951
2952                 break;
2953         case DISABLE_KEY:
2954                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2955                         ret = 0;
2956                         break;
2957                 }
2958
2959                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2960                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2961                 break;
2962         default:
2963                 ret = -EINVAL;
2964         }
2965
2966         mutex_unlock(&mvm->mutex);
2967         return ret;
2968 }
2969
2970 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2971                                         struct ieee80211_vif *vif,
2972                                         struct ieee80211_key_conf *keyconf,
2973                                         struct ieee80211_sta *sta,
2974                                         u32 iv32, u16 *phase1key)
2975 {
2976         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2977
2978         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2979                 return;
2980
2981         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2982 }
2983
2984
2985 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
2986                                struct iwl_rx_packet *pkt, void *data)
2987 {
2988         struct iwl_mvm *mvm =
2989                 container_of(notif_wait, struct iwl_mvm, notif_wait);
2990         struct iwl_hs20_roc_res *resp;
2991         int resp_len = iwl_rx_packet_payload_len(pkt);
2992         struct iwl_mvm_time_event_data *te_data = data;
2993
2994         if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
2995                 return true;
2996
2997         if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
2998                 IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
2999                 return true;
3000         }
3001
3002         resp = (void *)pkt->data;
3003
3004         IWL_DEBUG_TE(mvm,
3005                      "Aux ROC: Recieved response from ucode: status=%d uid=%d\n",
3006                      resp->status, resp->event_unique_id);
3007
3008         te_data->uid = le32_to_cpu(resp->event_unique_id);
3009         IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3010                      te_data->uid);
3011
3012         spin_lock_bh(&mvm->time_event_lock);
3013         list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3014         spin_unlock_bh(&mvm->time_event_lock);
3015
3016         return true;
3017 }
3018
3019 #define AUX_ROC_MAX_DELAY_ON_CHANNEL 200
3020 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3021                                     struct ieee80211_channel *channel,
3022                                     struct ieee80211_vif *vif,
3023                                     int duration)
3024 {
3025         int res, time_reg = DEVICE_SYSTEM_TIME_REG;
3026         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3027         struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3028         static const u8 time_event_response[] = { HOT_SPOT_CMD };
3029         struct iwl_notification_wait wait_time_event;
3030         struct iwl_hs20_roc_req aux_roc_req = {
3031                 .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3032                 .id_and_color =
3033                         cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3034                 .sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3035                 /* Set the channel info data */
3036                 .channel_info.band = (channel->band == IEEE80211_BAND_2GHZ) ?
3037                         PHY_BAND_24 : PHY_BAND_5,
3038                 .channel_info.channel = channel->hw_value,
3039                 .channel_info.width = PHY_VHT_CHANNEL_MODE20,
3040                 /* Set the time and duration */
3041                 .apply_time = cpu_to_le32(iwl_read_prph(mvm->trans, time_reg)),
3042                 .apply_time_max_delay =
3043                         cpu_to_le32(MSEC_TO_TU(AUX_ROC_MAX_DELAY_ON_CHANNEL)),
3044                 .duration = cpu_to_le32(MSEC_TO_TU(duration)),
3045          };
3046
3047         /* Set the node address */
3048         memcpy(aux_roc_req.node_addr, vif->addr, ETH_ALEN);
3049
3050         lockdep_assert_held(&mvm->mutex);
3051
3052         spin_lock_bh(&mvm->time_event_lock);
3053
3054         if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3055                 spin_unlock_bh(&mvm->time_event_lock);
3056                 return -EIO;
3057         }
3058
3059         te_data->vif = vif;
3060         te_data->duration = duration;
3061         te_data->id = HOT_SPOT_CMD;
3062
3063         spin_unlock_bh(&mvm->time_event_lock);
3064
3065         /*
3066          * Use a notification wait, which really just processes the
3067          * command response and doesn't wait for anything, in order
3068          * to be able to process the response and get the UID inside
3069          * the RX path. Using CMD_WANT_SKB doesn't work because it
3070          * stores the buffer and then wakes up this thread, by which
3071          * time another notification (that the time event started)
3072          * might already be processed unsuccessfully.
3073          */
3074         iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3075                                    time_event_response,
3076                                    ARRAY_SIZE(time_event_response),
3077                                    iwl_mvm_rx_aux_roc, te_data);
3078
3079         res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, sizeof(aux_roc_req),
3080                                    &aux_roc_req);
3081
3082         if (res) {
3083                 IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3084                 iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3085                 goto out_clear_te;
3086         }
3087
3088         /* No need to wait for anything, so just pass 1 (0 isn't valid) */
3089         res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3090         /* should never fail */
3091         WARN_ON_ONCE(res);
3092
3093         if (res) {
3094  out_clear_te:
3095                 spin_lock_bh(&mvm->time_event_lock);
3096                 iwl_mvm_te_clear_data(mvm, te_data);
3097                 spin_unlock_bh(&mvm->time_event_lock);
3098         }
3099
3100         return res;
3101 }
3102
3103 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3104                        struct ieee80211_vif *vif,
3105                        struct ieee80211_channel *channel,
3106                        int duration,
3107                        enum ieee80211_roc_type type)
3108 {
3109         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3110         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3111         struct cfg80211_chan_def chandef;
3112         struct iwl_mvm_phy_ctxt *phy_ctxt;
3113         int ret, i;
3114
3115         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3116                            duration, type);
3117
3118         flush_work(&mvm->roc_done_wk);
3119
3120         mutex_lock(&mvm->mutex);
3121
3122         switch (vif->type) {
3123         case NL80211_IFTYPE_STATION:
3124                 if (fw_has_capa(&mvm->fw->ucode_capa,
3125                                 IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3126                         /* Use aux roc framework (HS20) */
3127                         ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3128                                                        vif, duration);
3129                         goto out_unlock;
3130                 }
3131                 IWL_ERR(mvm, "hotspot not supported\n");
3132                 ret = -EINVAL;
3133                 goto out_unlock;
3134         case NL80211_IFTYPE_P2P_DEVICE:
3135                 /* handle below */
3136                 break;
3137         default:
3138                 IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3139                 ret = -EINVAL;
3140                 goto out_unlock;
3141         }
3142
3143         for (i = 0; i < NUM_PHY_CTX; i++) {
3144                 phy_ctxt = &mvm->phy_ctxts[i];
3145                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3146                         continue;
3147
3148                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3149                         /*
3150                          * Unbind the P2P_DEVICE from the current PHY context,
3151                          * and if the PHY context is not used remove it.
3152                          */
3153                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
3154                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3155                                 goto out_unlock;
3156
3157                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3158
3159                         /* Bind the P2P_DEVICE to the current PHY Context */
3160                         mvmvif->phy_ctxt = phy_ctxt;
3161
3162                         ret = iwl_mvm_binding_add_vif(mvm, vif);
3163                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3164                                 goto out_unlock;
3165
3166                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3167                         goto schedule_time_event;
3168                 }
3169         }
3170
3171         /* Need to update the PHY context only if the ROC channel changed */
3172         if (channel == mvmvif->phy_ctxt->channel)
3173                 goto schedule_time_event;
3174
3175         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3176
3177         /*
3178          * Change the PHY context configuration as it is currently referenced
3179          * only by the P2P Device MAC
3180          */
3181         if (mvmvif->phy_ctxt->ref == 1) {
3182                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3183                                                &chandef, 1, 1);
3184                 if (ret)
3185                         goto out_unlock;
3186         } else {
3187                 /*
3188                  * The PHY context is shared with other MACs. Need to remove the
3189                  * P2P Device from the binding, allocate an new PHY context and
3190                  * create a new binding
3191                  */
3192                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3193                 if (!phy_ctxt) {
3194                         ret = -ENOSPC;
3195                         goto out_unlock;
3196                 }
3197
3198                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3199                                                1, 1);
3200                 if (ret) {
3201                         IWL_ERR(mvm, "Failed to change PHY context\n");
3202                         goto out_unlock;
3203                 }
3204
3205                 /* Unbind the P2P_DEVICE from the current PHY context */
3206                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
3207                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3208                         goto out_unlock;
3209
3210                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3211
3212                 /* Bind the P2P_DEVICE to the new allocated PHY context */
3213                 mvmvif->phy_ctxt = phy_ctxt;
3214
3215                 ret = iwl_mvm_binding_add_vif(mvm, vif);
3216                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3217                         goto out_unlock;
3218
3219                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3220         }
3221
3222 schedule_time_event:
3223         /* Schedule the time events */
3224         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
3225
3226 out_unlock:
3227         mutex_unlock(&mvm->mutex);
3228         IWL_DEBUG_MAC80211(mvm, "leave\n");
3229         return ret;
3230 }
3231
3232 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
3233 {
3234         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3235
3236         IWL_DEBUG_MAC80211(mvm, "enter\n");
3237
3238         mutex_lock(&mvm->mutex);
3239         iwl_mvm_stop_roc(mvm);
3240         mutex_unlock(&mvm->mutex);
3241
3242         IWL_DEBUG_MAC80211(mvm, "leave\n");
3243         return 0;
3244 }
3245
3246 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
3247                                  struct ieee80211_chanctx_conf *ctx)
3248 {
3249         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3250         struct iwl_mvm_phy_ctxt *phy_ctxt;
3251         int ret;
3252
3253         lockdep_assert_held(&mvm->mutex);
3254
3255         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
3256
3257         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3258         if (!phy_ctxt) {
3259                 ret = -ENOSPC;
3260                 goto out;
3261         }
3262
3263         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3264                                        ctx->rx_chains_static,
3265                                        ctx->rx_chains_dynamic);
3266         if (ret) {
3267                 IWL_ERR(mvm, "Failed to add PHY context\n");
3268                 goto out;
3269         }
3270
3271         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
3272         *phy_ctxt_id = phy_ctxt->id;
3273 out:
3274         return ret;
3275 }
3276
3277 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
3278                                struct ieee80211_chanctx_conf *ctx)
3279 {
3280         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3281         int ret;
3282
3283         mutex_lock(&mvm->mutex);
3284         ret = __iwl_mvm_add_chanctx(mvm, ctx);
3285         mutex_unlock(&mvm->mutex);
3286
3287         return ret;
3288 }
3289
3290 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
3291                                      struct ieee80211_chanctx_conf *ctx)
3292 {
3293         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3294         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3295
3296         lockdep_assert_held(&mvm->mutex);
3297
3298         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
3299 }
3300
3301 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
3302                                    struct ieee80211_chanctx_conf *ctx)
3303 {
3304         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3305
3306         mutex_lock(&mvm->mutex);
3307         __iwl_mvm_remove_chanctx(mvm, ctx);
3308         mutex_unlock(&mvm->mutex);
3309 }
3310
3311 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
3312                                    struct ieee80211_chanctx_conf *ctx,
3313                                    u32 changed)
3314 {
3315         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3316         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3317         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3318
3319         if (WARN_ONCE((phy_ctxt->ref > 1) &&
3320                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
3321                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
3322                                    IEEE80211_CHANCTX_CHANGE_RADAR |
3323                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
3324                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
3325                       phy_ctxt->ref, changed))
3326                 return;
3327
3328         mutex_lock(&mvm->mutex);
3329         iwl_mvm_bt_coex_vif_change(mvm);
3330         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
3331                                  ctx->rx_chains_static,
3332                                  ctx->rx_chains_dynamic);
3333         mutex_unlock(&mvm->mutex);
3334 }
3335
3336 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
3337                                         struct ieee80211_vif *vif,
3338                                         struct ieee80211_chanctx_conf *ctx,
3339                                         bool switching_chanctx)
3340 {
3341         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
3342         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
3343         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3344         int ret;
3345
3346         lockdep_assert_held(&mvm->mutex);
3347
3348         mvmvif->phy_ctxt = phy_ctxt;
3349
3350         switch (vif->type) {
3351         case NL80211_IFTYPE_AP:
3352                 /* only needed if we're switching chanctx (i.e. during CSA) */
3353                 if (switching_chanctx) {
3354                         mvmvif->ap_ibss_active = true;
3355                         break;
3356                 }
3357         case NL80211_IFTYPE_ADHOC:
3358                 /*
3359                  * The AP binding flow is handled as part of the start_ap flow
3360                  * (in bss_info_changed), similarly for IBSS.
3361                  */
3362                 ret = 0;
3363                 goto out;
3364         case NL80211_IFTYPE_STATION:
3365                 break;
3366         case NL80211_IFTYPE_MONITOR:
3367                 /* always disable PS when a monitor interface is active */
3368                 mvmvif->ps_disabled = true;
3369                 break;
3370         default:
3371                 ret = -EINVAL;
3372                 goto out;
3373         }
3374
3375         ret = iwl_mvm_binding_add_vif(mvm, vif);
3376         if (ret)
3377                 goto out;
3378
3379         /*
3380          * Power state must be updated before quotas,
3381          * otherwise fw will complain.
3382          */
3383         iwl_mvm_power_update_mac(mvm);
3384
3385         /* Setting the quota at this stage is only required for monitor
3386          * interfaces. For the other types, the bss_info changed flow
3387          * will handle quota settings.
3388          */
3389         if (vif->type == NL80211_IFTYPE_MONITOR) {
3390                 mvmvif->monitor_active = true;
3391                 ret = iwl_mvm_update_quotas(mvm, false, NULL);
3392                 if (ret)
3393                         goto out_remove_binding;
3394         }
3395
3396         /* Handle binding during CSA */
3397         if (vif->type == NL80211_IFTYPE_AP) {
3398                 iwl_mvm_update_quotas(mvm, false, NULL);
3399                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3400         }
3401
3402         if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
3403                 u32 duration = 2 * vif->bss_conf.beacon_int;
3404
3405                 /* iwl_mvm_protect_session() reads directly from the
3406                  * device (the system time), so make sure it is
3407                  * available.
3408                  */
3409                 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PROTECT_CSA);
3410                 if (ret)
3411                         goto out_remove_binding;
3412
3413                 /* Protect the session to make sure we hear the first
3414                  * beacon on the new channel.
3415                  */
3416                 iwl_mvm_protect_session(mvm, vif, duration, duration,
3417                                         vif->bss_conf.beacon_int / 2,
3418                                         true);
3419
3420                 iwl_mvm_unref(mvm, IWL_MVM_REF_PROTECT_CSA);
3421
3422                 iwl_mvm_update_quotas(mvm, false, NULL);
3423         }
3424
3425         goto out;
3426
3427 out_remove_binding:
3428         iwl_mvm_binding_remove_vif(mvm, vif);
3429         iwl_mvm_power_update_mac(mvm);
3430 out:
3431         if (ret)
3432                 mvmvif->phy_ctxt = NULL;
3433         return ret;
3434 }
3435 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
3436                                       struct ieee80211_vif *vif,
3437                                       struct ieee80211_chanctx_conf *ctx)
3438 {
3439         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3440         int ret;
3441
3442         mutex_lock(&mvm->mutex);
3443         ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
3444         mutex_unlock(&mvm->mutex);
3445
3446         return ret;
3447 }
3448
3449 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
3450                                            struct ieee80211_vif *vif,
3451                                            struct ieee80211_chanctx_conf *ctx,
3452                                            bool switching_chanctx)
3453 {
3454         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3455         struct ieee80211_vif *disabled_vif = NULL;
3456
3457         lockdep_assert_held(&mvm->mutex);
3458
3459         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
3460
3461         switch (vif->type) {
3462         case NL80211_IFTYPE_ADHOC:
3463                 goto out;
3464         case NL80211_IFTYPE_MONITOR:
3465                 mvmvif->monitor_active = false;
3466                 mvmvif->ps_disabled = false;
3467                 break;
3468         case NL80211_IFTYPE_AP:
3469                 /* This part is triggered only during CSA */
3470                 if (!switching_chanctx || !mvmvif->ap_ibss_active)
3471                         goto out;
3472
3473                 mvmvif->csa_countdown = false;
3474
3475                 /* Set CS bit on all the stations */
3476                 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
3477
3478                 /* Save blocked iface, the timeout is set on the next beacon */
3479                 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
3480
3481                 mvmvif->ap_ibss_active = false;
3482                 break;
3483         case NL80211_IFTYPE_STATION:
3484                 if (!switching_chanctx)
3485                         break;
3486
3487                 disabled_vif = vif;
3488
3489                 iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
3490                 break;
3491         default:
3492                 break;
3493         }
3494
3495         iwl_mvm_update_quotas(mvm, false, disabled_vif);
3496         iwl_mvm_binding_remove_vif(mvm, vif);
3497
3498 out:
3499         mvmvif->phy_ctxt = NULL;
3500         iwl_mvm_power_update_mac(mvm);
3501 }
3502
3503 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
3504                                          struct ieee80211_vif *vif,
3505                                          struct ieee80211_chanctx_conf *ctx)
3506 {
3507         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3508
3509         mutex_lock(&mvm->mutex);
3510         __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
3511         mutex_unlock(&mvm->mutex);
3512 }
3513
3514 static int
3515 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
3516                                 struct ieee80211_vif_chanctx_switch *vifs)
3517 {
3518         int ret;
3519
3520         mutex_lock(&mvm->mutex);
3521         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3522         __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
3523
3524         ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
3525         if (ret) {
3526                 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
3527                 goto out_reassign;
3528         }
3529
3530         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3531                                            true);
3532         if (ret) {
3533                 IWL_ERR(mvm,
3534                         "failed to assign new_ctx during channel switch\n");
3535                 goto out_remove;
3536         }
3537
3538         /* we don't support TDLS during DCM - can be caused by channel switch */
3539         if (iwl_mvm_phy_ctx_count(mvm) > 1)
3540                 iwl_mvm_teardown_tdls_peers(mvm);
3541
3542         goto out;
3543
3544 out_remove:
3545         __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
3546
3547 out_reassign:
3548         if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
3549                 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
3550                 goto out_restart;
3551         }
3552
3553         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3554                                          true)) {
3555                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3556                 goto out_restart;
3557         }
3558
3559         goto out;
3560
3561 out_restart:
3562         /* things keep failing, better restart the hw */
3563         iwl_mvm_nic_restart(mvm, false);
3564
3565 out:
3566         mutex_unlock(&mvm->mutex);
3567
3568         return ret;
3569 }
3570
3571 static int
3572 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
3573                                     struct ieee80211_vif_chanctx_switch *vifs)
3574 {
3575         int ret;
3576
3577         mutex_lock(&mvm->mutex);
3578         __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
3579
3580         ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
3581                                            true);
3582         if (ret) {
3583                 IWL_ERR(mvm,
3584                         "failed to assign new_ctx during channel switch\n");
3585                 goto out_reassign;
3586         }
3587
3588         goto out;
3589
3590 out_reassign:
3591         if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
3592                                          true)) {
3593                 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
3594                 goto out_restart;
3595         }
3596
3597         goto out;
3598
3599 out_restart:
3600         /* things keep failing, better restart the hw */
3601         iwl_mvm_nic_restart(mvm, false);
3602
3603 out:
3604         mutex_unlock(&mvm->mutex);
3605
3606         return ret;
3607 }
3608
3609 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
3610                                       struct ieee80211_vif_chanctx_switch *vifs,
3611                                       int n_vifs,
3612                                       enum ieee80211_chanctx_switch_mode mode)
3613 {
3614         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3615         int ret;
3616
3617         /* we only support a single-vif right now */
3618         if (n_vifs > 1)
3619                 return -EOPNOTSUPP;
3620
3621         switch (mode) {
3622         case CHANCTX_SWMODE_SWAP_CONTEXTS:
3623                 ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
3624                 break;
3625         case CHANCTX_SWMODE_REASSIGN_VIF:
3626                 ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
3627                 break;
3628         default:
3629                 ret = -EOPNOTSUPP;
3630                 break;
3631         }
3632
3633         return ret;
3634 }
3635
3636 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
3637                            struct ieee80211_sta *sta,
3638                            bool set)
3639 {
3640         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3641         struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3642
3643         if (!mvm_sta || !mvm_sta->vif) {
3644                 IWL_ERR(mvm, "Station is not associated to a vif\n");
3645                 return -EINVAL;
3646         }
3647
3648         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
3649 }
3650
3651 #ifdef CONFIG_NL80211_TESTMODE
3652 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
3653         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
3654         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
3655         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
3656 };
3657
3658 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
3659                                       struct ieee80211_vif *vif,
3660                                       void *data, int len)
3661 {
3662         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
3663         int err;
3664         u32 noa_duration;
3665
3666         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
3667         if (err)
3668                 return err;
3669
3670         if (!tb[IWL_MVM_TM_ATTR_CMD])
3671                 return -EINVAL;
3672
3673         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
3674         case IWL_MVM_TM_CMD_SET_NOA:
3675                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
3676                     !vif->bss_conf.enable_beacon ||
3677                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
3678                         return -EINVAL;
3679
3680                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
3681                 if (noa_duration >= vif->bss_conf.beacon_int)
3682                         return -EINVAL;
3683
3684                 mvm->noa_duration = noa_duration;
3685                 mvm->noa_vif = vif;
3686
3687                 return iwl_mvm_update_quotas(mvm, false, NULL);
3688         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
3689                 /* must be associated client vif - ignore authorized */
3690                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
3691                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
3692                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
3693                         return -EINVAL;
3694
3695                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
3696                         return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3697                 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3698         }
3699
3700         return -EOPNOTSUPP;
3701 }
3702
3703 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
3704                                     struct ieee80211_vif *vif,
3705                                     void *data, int len)
3706 {
3707         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3708         int err;
3709
3710         mutex_lock(&mvm->mutex);
3711         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
3712         mutex_unlock(&mvm->mutex);
3713
3714         return err;
3715 }
3716 #endif
3717
3718 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
3719                                    struct ieee80211_vif *vif,
3720                                    struct ieee80211_channel_switch *chsw)
3721 {
3722         /* By implementing this operation, we prevent mac80211 from
3723          * starting its own channel switch timer, so that we can call
3724          * ieee80211_chswitch_done() ourselves at the right time
3725          * (which is when the absence time event starts).
3726          */
3727
3728         IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
3729                            "dummy channel switch op\n");
3730 }
3731
3732 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
3733                                       struct ieee80211_vif *vif,
3734                                       struct ieee80211_channel_switch *chsw)
3735 {
3736         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3737         struct ieee80211_vif *csa_vif;
3738         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3739         u32 apply_time;
3740         int ret;
3741
3742         mutex_lock(&mvm->mutex);
3743
3744         mvmvif->csa_failed = false;
3745
3746         IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
3747                            chsw->chandef.center_freq1);
3748
3749         iwl_fw_dbg_trigger_simple_stop(mvm, vif, FW_DBG_TRIGGER_CHANNEL_SWITCH);
3750
3751         switch (vif->type) {
3752         case NL80211_IFTYPE_AP:
3753                 csa_vif =
3754                         rcu_dereference_protected(mvm->csa_vif,
3755                                                   lockdep_is_held(&mvm->mutex));
3756                 if (WARN_ONCE(csa_vif && csa_vif->csa_active,
3757                               "Another CSA is already in progress")) {
3758                         ret = -EBUSY;
3759                         goto out_unlock;
3760                 }
3761
3762                 rcu_assign_pointer(mvm->csa_vif, vif);
3763
3764                 if (WARN_ONCE(mvmvif->csa_countdown,
3765                               "Previous CSA countdown didn't complete")) {
3766                         ret = -EBUSY;
3767                         goto out_unlock;
3768                 }
3769
3770                 break;
3771         case NL80211_IFTYPE_STATION:
3772                 /* Schedule the time event to a bit before beacon 1,
3773                  * to make sure we're in the new channel when the
3774                  * GO/AP arrives.
3775                  */
3776                 apply_time = chsw->device_timestamp +
3777                         ((vif->bss_conf.beacon_int * (chsw->count - 1) -
3778                           IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
3779
3780                 if (chsw->block_tx)
3781                         iwl_mvm_csa_client_absent(mvm, vif);
3782
3783                 iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
3784                                             apply_time);
3785                 if (mvmvif->bf_data.bf_enabled) {
3786                         ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3787                         if (ret)
3788                                 goto out_unlock;
3789                 }
3790
3791                 break;
3792         default:
3793                 break;
3794         }
3795
3796         mvmvif->ps_disabled = true;
3797
3798         ret = iwl_mvm_power_update_ps(mvm);
3799         if (ret)
3800                 goto out_unlock;
3801
3802         /* we won't be on this channel any longer */
3803         iwl_mvm_teardown_tdls_peers(mvm);
3804
3805 out_unlock:
3806         mutex_unlock(&mvm->mutex);
3807
3808         return ret;
3809 }
3810
3811 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
3812                                        struct ieee80211_vif *vif)
3813 {
3814         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3815         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3816         int ret;
3817
3818         mutex_lock(&mvm->mutex);
3819
3820         if (mvmvif->csa_failed) {
3821                 mvmvif->csa_failed = false;
3822                 ret = -EIO;
3823                 goto out_unlock;
3824         }
3825
3826         if (vif->type == NL80211_IFTYPE_STATION) {
3827                 struct iwl_mvm_sta *mvmsta;
3828
3829                 mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
3830                                                           mvmvif->ap_sta_id);
3831
3832                 if (WARN_ON(!mvmsta)) {
3833                         ret = -EIO;
3834                         goto out_unlock;
3835                 }
3836
3837                 iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
3838
3839                 iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3840
3841                 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
3842                 if (ret)
3843                         goto out_unlock;
3844
3845                 iwl_mvm_stop_session_protection(mvm, vif);
3846         }
3847
3848         mvmvif->ps_disabled = false;
3849
3850         ret = iwl_mvm_power_update_ps(mvm);
3851
3852 out_unlock:
3853         mutex_unlock(&mvm->mutex);
3854
3855         return ret;
3856 }
3857
3858 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
3859                               struct ieee80211_vif *vif, u32 queues, bool drop)
3860 {
3861         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3862         struct iwl_mvm_vif *mvmvif;
3863         struct iwl_mvm_sta *mvmsta;
3864         struct ieee80211_sta *sta;
3865         int i;
3866         u32 msk = 0;
3867
3868         if (!vif || vif->type != NL80211_IFTYPE_STATION)
3869                 return;
3870
3871         mutex_lock(&mvm->mutex);
3872         mvmvif = iwl_mvm_vif_from_mac80211(vif);
3873
3874         /* flush the AP-station and all TDLS peers */
3875         for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
3876                 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
3877                                                 lockdep_is_held(&mvm->mutex));
3878                 if (IS_ERR_OR_NULL(sta))
3879                         continue;
3880
3881                 mvmsta = iwl_mvm_sta_from_mac80211(sta);
3882                 if (mvmsta->vif != vif)
3883                         continue;
3884
3885                 /* make sure only TDLS peers or the AP are flushed */
3886                 WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
3887
3888                 msk |= mvmsta->tfd_queue_msk;
3889         }
3890
3891         if (drop) {
3892                 if (iwl_mvm_flush_tx_path(mvm, msk, true))
3893                         IWL_ERR(mvm, "flush request fail\n");
3894                 mutex_unlock(&mvm->mutex);
3895         } else {
3896                 mutex_unlock(&mvm->mutex);
3897
3898                 /* this can take a while, and we may need/want other operations
3899                  * to succeed while doing this, so do it without the mutex held
3900                  */
3901                 iwl_trans_wait_tx_queue_empty(mvm->trans, msk);
3902         }
3903 }
3904
3905 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
3906                                   struct survey_info *survey)
3907 {
3908         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3909         int ret;
3910
3911         memset(survey, 0, sizeof(*survey));
3912
3913         /* only support global statistics right now */
3914         if (idx != 0)
3915                 return -ENOENT;
3916
3917         if (fw_has_capa(&mvm->fw->ucode_capa,
3918                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3919                 return -ENOENT;
3920
3921         mutex_lock(&mvm->mutex);
3922
3923         if (mvm->ucode_loaded) {
3924                 ret = iwl_mvm_request_statistics(mvm, false);
3925                 if (ret)
3926                         goto out;
3927         }
3928
3929         survey->filled = SURVEY_INFO_TIME |
3930                          SURVEY_INFO_TIME_RX |
3931                          SURVEY_INFO_TIME_TX |
3932                          SURVEY_INFO_TIME_SCAN;
3933         survey->time = mvm->accu_radio_stats.on_time_rf +
3934                        mvm->radio_stats.on_time_rf;
3935         do_div(survey->time, USEC_PER_MSEC);
3936
3937         survey->time_rx = mvm->accu_radio_stats.rx_time +
3938                           mvm->radio_stats.rx_time;
3939         do_div(survey->time_rx, USEC_PER_MSEC);
3940
3941         survey->time_tx = mvm->accu_radio_stats.tx_time +
3942                           mvm->radio_stats.tx_time;
3943         do_div(survey->time_tx, USEC_PER_MSEC);
3944
3945         survey->time_scan = mvm->accu_radio_stats.on_time_scan +
3946                             mvm->radio_stats.on_time_scan;
3947         do_div(survey->time_scan, USEC_PER_MSEC);
3948
3949         ret = 0;
3950  out:
3951         mutex_unlock(&mvm->mutex);
3952         return ret;
3953 }
3954
3955 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
3956                                        struct ieee80211_vif *vif,
3957                                        struct ieee80211_sta *sta,
3958                                        struct station_info *sinfo)
3959 {
3960         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3961         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3962         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3963
3964         if (fw_has_capa(&mvm->fw->ucode_capa,
3965                         IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
3966                 return;
3967
3968         /* if beacon filtering isn't on mac80211 does it anyway */
3969         if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
3970                 return;
3971
3972         if (!vif->bss_conf.assoc)
3973                 return;
3974
3975         mutex_lock(&mvm->mutex);
3976
3977         if (mvmvif->ap_sta_id != mvmsta->sta_id)
3978                 goto unlock;
3979
3980         if (iwl_mvm_request_statistics(mvm, false))
3981                 goto unlock;
3982
3983         sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
3984                            mvmvif->beacon_stats.accu_num_beacons;
3985         sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX);
3986         if (mvmvif->beacon_stats.avg_signal) {
3987                 /* firmware only reports a value after RXing a few beacons */
3988                 sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
3989                 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
3990         }
3991  unlock:
3992         mutex_unlock(&mvm->mutex);
3993 }
3994
3995 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
3996                                         struct ieee80211_vif *vif,
3997                                         const struct ieee80211_event *event)
3998 {
3999 #define CHECK_MLME_TRIGGER(_mvm, _trig, _buf, _cnt, _fmt...)    \
4000         do {                                                    \
4001                 if ((_cnt) && --(_cnt))                         \
4002                         break;                                  \
4003                 iwl_mvm_fw_dbg_collect_trig(_mvm, _trig, _fmt);\
4004         } while (0)
4005
4006         struct iwl_fw_dbg_trigger_tlv *trig;
4007         struct iwl_fw_dbg_trigger_mlme *trig_mlme;
4008
4009         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
4010                 return;
4011
4012         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
4013         trig_mlme = (void *)trig->data;
4014         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4015                 return;
4016
4017         if (event->u.mlme.data == ASSOC_EVENT) {
4018                 if (event->u.mlme.status == MLME_DENIED)
4019                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4020                                            trig_mlme->stop_assoc_denied,
4021                                            "DENIED ASSOC: reason %d",
4022                                             event->u.mlme.reason);
4023                 else if (event->u.mlme.status == MLME_TIMEOUT)
4024                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4025                                            trig_mlme->stop_assoc_timeout,
4026                                            "ASSOC TIMEOUT");
4027         } else if (event->u.mlme.data == AUTH_EVENT) {
4028                 if (event->u.mlme.status == MLME_DENIED)
4029                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4030                                            trig_mlme->stop_auth_denied,
4031                                            "DENIED AUTH: reason %d",
4032                                            event->u.mlme.reason);
4033                 else if (event->u.mlme.status == MLME_TIMEOUT)
4034                         CHECK_MLME_TRIGGER(mvm, trig, buf,
4035                                            trig_mlme->stop_auth_timeout,
4036                                            "AUTH TIMEOUT");
4037         } else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
4038                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4039                                    trig_mlme->stop_rx_deauth,
4040                                    "DEAUTH RX %d", event->u.mlme.reason);
4041         } else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
4042                 CHECK_MLME_TRIGGER(mvm, trig, buf,
4043                                    trig_mlme->stop_tx_deauth,
4044                                    "DEAUTH TX %d", event->u.mlme.reason);
4045         }
4046 #undef CHECK_MLME_TRIGGER
4047 }
4048
4049 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
4050                                           struct ieee80211_vif *vif,
4051                                           const struct ieee80211_event *event)
4052 {
4053         struct iwl_fw_dbg_trigger_tlv *trig;
4054         struct iwl_fw_dbg_trigger_ba *ba_trig;
4055
4056         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4057                 return;
4058
4059         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4060         ba_trig = (void *)trig->data;
4061         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4062                 return;
4063
4064         if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
4065                 return;
4066
4067         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4068                                     "BAR received from %pM, tid %d, ssn %d",
4069                                     event->u.ba.sta->addr, event->u.ba.tid,
4070                                     event->u.ba.ssn);
4071 }
4072
4073 static void
4074 iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
4075                                      struct ieee80211_vif *vif,
4076                                      const struct ieee80211_event *event)
4077 {
4078         struct iwl_fw_dbg_trigger_tlv *trig;
4079         struct iwl_fw_dbg_trigger_ba *ba_trig;
4080
4081         if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA))
4082                 return;
4083
4084         trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA);
4085         ba_trig = (void *)trig->data;
4086         if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
4087                 return;
4088
4089         if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(event->u.ba.tid)))
4090                 return;
4091
4092         iwl_mvm_fw_dbg_collect_trig(mvm, trig,
4093                                     "Frame from %pM timed out, tid %d",
4094                                     event->u.ba.sta->addr, event->u.ba.tid);
4095 }
4096
4097 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
4098                                        struct ieee80211_vif *vif,
4099                                        const struct ieee80211_event *event)
4100 {
4101         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4102
4103         switch (event->type) {
4104         case MLME_EVENT:
4105                 iwl_mvm_event_mlme_callback(mvm, vif, event);
4106                 break;
4107         case BAR_RX_EVENT:
4108                 iwl_mvm_event_bar_rx_callback(mvm, vif, event);
4109                 break;
4110         case BA_FRAME_TIMEOUT:
4111                 iwl_mvm_event_frame_timeout_callback(mvm, vif, event);
4112                 break;
4113         default:
4114                 break;
4115         }
4116 }
4117
4118 const struct ieee80211_ops iwl_mvm_hw_ops = {
4119         .tx = iwl_mvm_mac_tx,
4120         .ampdu_action = iwl_mvm_mac_ampdu_action,
4121         .start = iwl_mvm_mac_start,
4122         .reconfig_complete = iwl_mvm_mac_reconfig_complete,
4123         .stop = iwl_mvm_mac_stop,
4124         .add_interface = iwl_mvm_mac_add_interface,
4125         .remove_interface = iwl_mvm_mac_remove_interface,
4126         .config = iwl_mvm_mac_config,
4127         .prepare_multicast = iwl_mvm_prepare_multicast,
4128         .configure_filter = iwl_mvm_configure_filter,
4129         .bss_info_changed = iwl_mvm_bss_info_changed,
4130         .hw_scan = iwl_mvm_mac_hw_scan,
4131         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
4132         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
4133         .sta_state = iwl_mvm_mac_sta_state,
4134         .sta_notify = iwl_mvm_mac_sta_notify,
4135         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
4136         .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
4137         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
4138         .sta_rc_update = iwl_mvm_sta_rc_update,
4139         .conf_tx = iwl_mvm_mac_conf_tx,
4140         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
4141         .mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
4142         .flush = iwl_mvm_mac_flush,
4143         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
4144         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
4145         .set_key = iwl_mvm_mac_set_key,
4146         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
4147         .remain_on_channel = iwl_mvm_roc,
4148         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
4149         .add_chanctx = iwl_mvm_add_chanctx,
4150         .remove_chanctx = iwl_mvm_remove_chanctx,
4151         .change_chanctx = iwl_mvm_change_chanctx,
4152         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
4153         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
4154         .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
4155
4156         .start_ap = iwl_mvm_start_ap_ibss,
4157         .stop_ap = iwl_mvm_stop_ap_ibss,
4158         .join_ibss = iwl_mvm_start_ap_ibss,
4159         .leave_ibss = iwl_mvm_stop_ap_ibss,
4160
4161         .set_tim = iwl_mvm_set_tim,
4162
4163         .channel_switch = iwl_mvm_channel_switch,
4164         .pre_channel_switch = iwl_mvm_pre_channel_switch,
4165         .post_channel_switch = iwl_mvm_post_channel_switch,
4166
4167         .tdls_channel_switch = iwl_mvm_tdls_channel_switch,
4168         .tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
4169         .tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
4170
4171         .event_callback = iwl_mvm_mac_event_callback,
4172
4173         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
4174
4175 #ifdef CONFIG_PM_SLEEP
4176         /* look at d3.c */
4177         .suspend = iwl_mvm_suspend,
4178         .resume = iwl_mvm_resume,
4179         .set_wakeup = iwl_mvm_set_wakeup,
4180         .set_rekey_data = iwl_mvm_set_rekey_data,
4181 #if IS_ENABLED(CONFIG_IPV6)
4182         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
4183 #endif
4184         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
4185 #endif
4186         .get_survey = iwl_mvm_mac_get_survey,
4187         .sta_statistics = iwl_mvm_mac_sta_statistics,
4188 };