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 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
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  22  * USA
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  25  * in the file called COPYING.
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
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  30  *
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  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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  37  * modification, are permitted provided that the following conditions
  38  * are met:
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  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <net/mac80211.h>
  70 #include <net/tcp.h>
  71
  72 #include "iwl-op-mode.h"
  73 #include "iwl-io.h"
  74 #include "mvm.h"
  75 #include "sta.h"
  76 #include "time-event.h"
  77 #include "iwl-eeprom-parse.h"
  78 #include "fw-api-scan.h"
  79 #include "iwl-phy-db.h"
  80
  81 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  82         {
  83                 .max = 1,
  84                 .types = BIT(NL80211_IFTYPE_STATION) |
  85                         BIT(NL80211_IFTYPE_AP),
  86         },
  87         {
  88                 .max = 1,
  89                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
  90                         BIT(NL80211_IFTYPE_P2P_GO),
  91         },
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  95         },
  96 };
  97
  98 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
  99         {
 100                 .num_different_channels = 1,
 101                 .max_interfaces = 3,
 102                 .limits = iwl_mvm_limits,
 103                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 104         },
 105 };
 106
 107 #ifdef CONFIG_PM_SLEEP
 108 static const struct nl80211_wowlan_tcp_data_token_feature
 109 iwl_mvm_wowlan_tcp_token_feature = {
 110         .min_len = 0,
 111         .max_len = 255,
 112         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 113 };
 114
 115 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 116         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 117         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 118                             sizeof(struct ethhdr) -
 119                             sizeof(struct iphdr) -
 120                             sizeof(struct tcphdr),
 121         .data_interval_max = 65535, /* __le16 in API */
 122         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 123                             sizeof(struct ethhdr) -
 124                             sizeof(struct iphdr) -
 125                             sizeof(struct tcphdr),
 126         .seq = true,
 127 };
 128 #endif
 129
 130 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 131 {
 132         struct ieee80211_hw *hw = mvm->hw;
 133         int num_mac, ret, i;
 134
 135         /* Tell mac80211 our characteristics */
 136         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 137                     IEEE80211_HW_SPECTRUM_MGMT |
 138                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 139                     IEEE80211_HW_QUEUE_CONTROL |
 140                     IEEE80211_HW_WANT_MONITOR_VIF |
 141                     IEEE80211_HW_SUPPORTS_PS |
 142                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 143                     IEEE80211_HW_AMPDU_AGGREGATION |
 144                     IEEE80211_HW_TIMING_BEACON_ONLY;
 145
 146         hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
 147         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 148         hw->rate_control_algorithm = "iwl-mvm-rs";
 149
 150         /*
 151          * Enable 11w if advertised by firmware and software crypto
 152          * is not enabled (as the firmware will interpret some mgmt
 153          * packets, so enabling it with software crypto isn't safe)
 154          */
 155         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 156             !iwlwifi_mod_params.sw_crypto)
 157                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 158
 159         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 160         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 161         hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
 162
 163         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 164                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 165                 BIT(NL80211_IFTYPE_AP) |
 166                 BIT(NL80211_IFTYPE_P2P_GO) |
 167                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 168
 169         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 170                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
 171                             WIPHY_FLAG_IBSS_RSN;
 172
 173         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 174         hw->wiphy->n_iface_combinations =
 175                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 176
 177         hw->wiphy->max_remain_on_channel_duration = 10000;
 178         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 179
 180         /* Extract MAC address */
 181         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 182         hw->wiphy->addresses = mvm->addresses;
 183         hw->wiphy->n_addresses = 1;
 184
 185         /* Extract additional MAC addresses if available */
 186         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 187                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 188
 189         for (i = 1; i < num_mac; i++) {
 190                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 191                        ETH_ALEN);
 192                 mvm->addresses[i].addr[5]++;
 193                 hw->wiphy->n_addresses++;
 194         }
 195
 196         /* we create the 802.11 header and a max-length SSID element */
 197         hw->wiphy->max_scan_ie_len =
 198                 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 199         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 200
 201         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 202                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 203                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 204         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 205                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 206                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 207
 208         hw->wiphy->hw_version = mvm->trans->hw_id;
 209
 210         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 211                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 212         else
 213                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 214
 215         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 216                                NL80211_FEATURE_P2P_GO_OPPPS;
 217
 218         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 219
 220 #ifdef CONFIG_PM_SLEEP
 221         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 222             mvm->trans->ops->d3_suspend &&
 223             mvm->trans->ops->d3_resume &&
 224             device_can_wakeup(mvm->trans->dev)) {
 225                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 226                                           WIPHY_WOWLAN_DISCONNECT |
 227                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 228                                           WIPHY_WOWLAN_RFKILL_RELEASE;
 229                 if (!iwlwifi_mod_params.sw_crypto)
 230                         hw->wiphy->wowlan.flags |=
 231                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 232                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 233                                 WIPHY_WOWLAN_4WAY_HANDSHAKE;
 234
 235                 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 236                 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 237                 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 238                 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 239         }
 240 #endif
 241
 242         ret = iwl_mvm_leds_init(mvm);
 243         if (ret)
 244                 return ret;
 245
 246         ret = ieee80211_register_hw(mvm->hw);
 247         if (ret)
 248                 iwl_mvm_leds_exit(mvm);
 249
 250         return ret;
 251 }
 252
 253 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 254                            struct ieee80211_tx_control *control,
 255                            struct sk_buff *skb)
 256 {
 257         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 258
 259         if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
 260                 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
 261                 goto drop;
 262         }
 263
 264         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 265             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 266                 goto drop;
 267
 268         if (control->sta) {
 269                 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
 270                         goto drop;
 271                 return;
 272         }
 273
 274         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 275                 goto drop;
 276         return;
 277  drop:
 278         ieee80211_free_txskb(hw, skb);
 279 }
 280
 281 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 282                                     struct ieee80211_vif *vif,
 283                                     enum ieee80211_ampdu_mlme_action action,
 284                                     struct ieee80211_sta *sta, u16 tid,
 285                                     u16 *ssn, u8 buf_size)
 286 {
 287         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 288         int ret;
 289
 290         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 291                      sta->addr, tid, action);
 292
 293         if (!(mvm->nvm_data->sku_cap_11n_enable))
 294                 return -EACCES;
 295
 296         mutex_lock(&mvm->mutex);
 297
 298         switch (action) {
 299         case IEEE80211_AMPDU_RX_START:
 300                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
 301                         ret = -EINVAL;
 302                         break;
 303                 }
 304                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 305                 break;
 306         case IEEE80211_AMPDU_RX_STOP:
 307                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 308                 break;
 309         case IEEE80211_AMPDU_TX_START:
 310                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
 311                         ret = -EINVAL;
 312                         break;
 313                 }
 314                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 315                 break;
 316         case IEEE80211_AMPDU_TX_STOP_CONT:
 317                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 318                 break;
 319         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 320         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 321                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 322                 break;
 323         case IEEE80211_AMPDU_TX_OPERATIONAL:
 324                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 325                 break;
 326         default:
 327                 WARN_ON_ONCE(1);
 328                 ret = -EINVAL;
 329                 break;
 330         }
 331         mutex_unlock(&mvm->mutex);
 332
 333         return ret;
 334 }
 335
 336 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 337                                      struct ieee80211_vif *vif)
 338 {
 339         struct iwl_mvm *mvm = data;
 340         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 341
 342         mvmvif->uploaded = false;
 343         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 344
 345         /* does this make sense at all? */
 346         mvmvif->color++;
 347
 348         spin_lock_bh(&mvm->time_event_lock);
 349         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 350         spin_unlock_bh(&mvm->time_event_lock);
 351
 352         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 353                 mvmvif->phy_ctxt = NULL;
 354 }
 355
 356 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 357 {
 358         iwl_trans_stop_device(mvm->trans);
 359         iwl_trans_stop_hw(mvm->trans, false);
 360
 361         mvm->scan_status = IWL_MVM_SCAN_NONE;
 362
 363         /* just in case one was running */
 364         ieee80211_remain_on_channel_expired(mvm->hw);
 365
 366         ieee80211_iterate_active_interfaces_atomic(
 367                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 368                 iwl_mvm_cleanup_iterator, mvm);
 369
 370         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 371         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 372
 373         ieee80211_wake_queues(mvm->hw);
 374
 375         mvm->vif_count = 0;
 376 }
 377
 378 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 379 {
 380         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 381         int ret;
 382
 383         mutex_lock(&mvm->mutex);
 384
 385         /* Clean up some internal and mac80211 state on restart */
 386         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 387                 iwl_mvm_restart_cleanup(mvm);
 388
 389         ret = iwl_mvm_up(mvm);
 390         mutex_unlock(&mvm->mutex);
 391
 392         return ret;
 393 }
 394
 395 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 396 {
 397         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 398         int ret;
 399
 400         mutex_lock(&mvm->mutex);
 401
 402         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 403         ret = iwl_mvm_update_quotas(mvm, NULL);
 404         if (ret)
 405                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 406                         ret);
 407
 408         mutex_unlock(&mvm->mutex);
 409 }
 410
 411 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 412 {
 413         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 414
 415         flush_work(&mvm->async_handlers_wk);
 416
 417         mutex_lock(&mvm->mutex);
 418         /* async_handlers_wk is now blocked */
 419
 420         /*
 421          * The work item could be running or queued if the
 422          * ROC time event stops just as we get here.
 423          */
 424         cancel_work_sync(&mvm->roc_done_wk);
 425
 426         iwl_trans_stop_device(mvm->trans);
 427         iwl_trans_stop_hw(mvm->trans, false);
 428
 429         iwl_mvm_async_handlers_purge(mvm);
 430         /* async_handlers_list is empty and will stay empty: HW is stopped */
 431
 432         /* the fw is stopped, the aux sta is dead: clean up driver state */
 433         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 434
 435         mutex_unlock(&mvm->mutex);
 436
 437         /*
 438          * The worker might have been waiting for the mutex, let it run and
 439          * discover that its list is now empty.
 440          */
 441         cancel_work_sync(&mvm->async_handlers_wk);
 442 }
 443
 444 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
 445                                         struct ieee80211_vif *vif)
 446 {
 447         struct iwl_mvm *mvm = data;
 448         int ret;
 449
 450         ret = iwl_mvm_power_disable(mvm, vif);
 451         if (ret)
 452                 IWL_ERR(mvm, "failed to disable power management\n");
 453 }
 454
 455 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 456                                           struct ieee80211_vif *vif)
 457 {
 458         struct iwl_mvm *mvm = data;
 459
 460         iwl_mvm_power_update_mode(mvm, vif);
 461 }
 462
 463 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 464                                      struct ieee80211_vif *vif)
 465 {
 466         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 467         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 468         int ret;
 469
 470         /*
 471          * Not much to do here. The stack will not allow interface
 472          * types or combinations that we didn't advertise, so we
 473          * don't really have to check the types.
 474          */
 475
 476         mutex_lock(&mvm->mutex);
 477
 478         /* Allocate resources for the MAC context, and add it the the fw  */
 479         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 480         if (ret)
 481                 goto out_unlock;
 482
 483         /*
 484          * The AP binding flow can be done only after the beacon
 485          * template is configured (which happens only in the mac80211
 486          * start_ap() flow), and adding the broadcast station can happen
 487          * only after the binding.
 488          * In addition, since modifying the MAC before adding a bcast
 489          * station is not allowed by the FW, delay the adding of MAC context to
 490          * the point where we can also add the bcast station.
 491          * In short: there's not much we can do at this point, other than
 492          * allocating resources :)
 493          */
 494         if (vif->type == NL80211_IFTYPE_AP) {
 495                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 496                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 497                                                qmask);
 498                 if (ret) {
 499                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 500                         goto out_release;
 501                 }
 502
 503                 goto out_unlock;
 504         }
 505
 506         /*
 507          * TODO: remove this temporary code.
 508          * Currently MVM FW supports power management only on single MAC.
 509          * If new interface added, disable PM on existing interface.
 510          * P2P device is a special case, since it is handled by FW similary to
 511          * scan. If P2P deviced is added, PM remains enabled on existing
 512          * interface.
 513          * Note: the method below does not count the new interface being added
 514          * at this moment.
 515          */
 516         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 517                 mvm->vif_count++;
 518         if (mvm->vif_count > 1) {
 519                 IWL_DEBUG_MAC80211(mvm,
 520                                    "Disable power on existing interfaces\n");
 521                 ieee80211_iterate_active_interfaces_atomic(
 522                                             mvm->hw,
 523                                             IEEE80211_IFACE_ITER_NORMAL,
 524                                             iwl_mvm_pm_disable_iterator, mvm);
 525         }
 526
 527         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 528         if (ret)
 529                 goto out_release;
 530
 531         /*
 532          * Update power state on the new interface. Admittedly, based on
 533          * mac80211 logics this power update will disable power management
 534          */
 535         iwl_mvm_power_update_mode(mvm, vif);
 536
 537         /*
 538          * P2P_DEVICE interface does not have a channel context assigned to it,
 539          * so a dedicated PHY context is allocated to it and the corresponding
 540          * MAC context is bound to it at this stage.
 541          */
 542         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 543                 struct ieee80211_channel *chan;
 544                 struct cfg80211_chan_def chandef;
 545
 546                 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
 547
 548                 /*
 549                  * The channel used here isn't relevant as it's
 550                  * going to be overwritten as part of the ROC flow.
 551                  * For now use the first channel we have.
 552                  */
 553                 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 554                 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 555                 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
 556                                            &chandef, 1, 1);
 557                 if (ret)
 558                         goto out_remove_mac;
 559
 560                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 561                 if (ret)
 562                         goto out_remove_phy;
 563
 564                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 565                 if (ret)
 566                         goto out_unbind;
 567
 568                 /* Save a pointer to p2p device vif, so it can later be used to
 569                  * update the p2p device MAC when a GO is started/stopped */
 570                 mvm->p2p_device_vif = vif;
 571         }
 572
 573         iwl_mvm_vif_dbgfs_register(mvm, vif);
 574         goto out_unlock;
 575
 576  out_unbind:
 577         iwl_mvm_binding_remove_vif(mvm, vif);
 578  out_remove_phy:
 579         iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 580  out_remove_mac:
 581         mvmvif->phy_ctxt = NULL;
 582         iwl_mvm_mac_ctxt_remove(mvm, vif);
 583  out_release:
 584         /*
 585          * TODO: remove this temporary code.
 586          * Currently MVM FW supports power management only on single MAC.
 587          * Check if only one additional interface remains after releasing
 588          * current one. Update power mode on the remaining interface.
 589          */
 590         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 591                 mvm->vif_count--;
 592         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 593                            mvm->vif_count);
 594         if (mvm->vif_count == 1) {
 595                 ieee80211_iterate_active_interfaces(
 596                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 597                                         iwl_mvm_power_update_iterator, mvm);
 598         }
 599         iwl_mvm_mac_ctxt_release(mvm, vif);
 600  out_unlock:
 601         mutex_unlock(&mvm->mutex);
 602
 603         return ret;
 604 }
 605
 606 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 607                                         struct ieee80211_vif *vif)
 608 {
 609         u32 tfd_msk = 0, ac;
 610
 611         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 612                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 613                         tfd_msk |= BIT(vif->hw_queue[ac]);
 614
 615         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 616                 tfd_msk |= BIT(vif->cab_queue);
 617
 618         if (tfd_msk) {
 619                 mutex_lock(&mvm->mutex);
 620                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 621                 mutex_unlock(&mvm->mutex);
 622         }
 623
 624         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 625                 /*
 626                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 627                  * We assume here that all the packets sent to the OFFCHANNEL
 628                  * queue are sent in ROC session.
 629                  */
 630                 flush_work(&mvm->roc_done_wk);
 631         } else {
 632                 /*
 633                  * By now, all the AC queues are empty. The AGG queues are
 634                  * empty too. We already got all the Tx responses for all the
 635                  * packets in the queues. The drain work can have been
 636                  * triggered. Flush it. This work item takes the mutex, so kill
 637                  * it before we take it.
 638                  */
 639                 flush_work(&mvm->sta_drained_wk);
 640         }
 641 }
 642
 643 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 644                                          struct ieee80211_vif *vif)
 645 {
 646         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 647         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 648
 649         iwl_mvm_prepare_mac_removal(mvm, vif);
 650
 651         mutex_lock(&mvm->mutex);
 652
 653         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 654
 655         /*
 656          * For AP/GO interface, the tear down of the resources allocated to the
 657          * interface is be handled as part of the stop_ap flow.
 658          */
 659         if (vif->type == NL80211_IFTYPE_AP) {
 660                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 661                 goto out_release;
 662         }
 663
 664         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 665                 mvm->p2p_device_vif = NULL;
 666                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 667                 iwl_mvm_binding_remove_vif(mvm, vif);
 668                 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 669                 mvmvif->phy_ctxt = NULL;
 670         }
 671
 672         /*
 673          * TODO: remove this temporary code.
 674          * Currently MVM FW supports power management only on single MAC.
 675          * Check if only one additional interface remains after removing
 676          * current one. Update power mode on the remaining interface.
 677          */
 678         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 679                 mvm->vif_count--;
 680         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 681                            mvm->vif_count);
 682         if (mvm->vif_count == 1) {
 683                 ieee80211_iterate_active_interfaces(
 684                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 685                                         iwl_mvm_power_update_iterator, mvm);
 686         }
 687
 688         iwl_mvm_mac_ctxt_remove(mvm, vif);
 689
 690 out_release:
 691         iwl_mvm_mac_ctxt_release(mvm, vif);
 692         mutex_unlock(&mvm->mutex);
 693 }
 694
 695 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 696 {
 697         return 0;
 698 }
 699
 700 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 701                                      unsigned int changed_flags,
 702                                      unsigned int *total_flags,
 703                                      u64 multicast)
 704 {
 705         *total_flags = 0;
 706 }
 707
 708 static int iwl_mvm_configure_mcast_filter(struct iwl_mvm *mvm,
 709                                           struct ieee80211_vif *vif)
 710 {
 711         struct iwl_mcast_filter_cmd mcast_filter_cmd = {
 712                 .pass_all = 1,
 713         };
 714
 715         memcpy(mcast_filter_cmd.bssid, vif->bss_conf.bssid, ETH_ALEN);
 716
 717         return iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC,
 718                                     sizeof(mcast_filter_cmd),
 719                                     &mcast_filter_cmd);
 720 }
 721
 722 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 723                                              struct ieee80211_vif *vif,
 724                                              struct ieee80211_bss_conf *bss_conf,
 725                                              u32 changes)
 726 {
 727         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 728         int ret;
 729
 730         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 731         if (ret)
 732                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 733
 734         if (changes & BSS_CHANGED_ASSOC) {
 735                 if (bss_conf->assoc) {
 736                         /* add quota for this interface */
 737                         ret = iwl_mvm_update_quotas(mvm, vif);
 738                         if (ret) {
 739                                 IWL_ERR(mvm, "failed to update quotas\n");
 740                                 return;
 741                         }
 742                         iwl_mvm_bt_coex_vif_assoc(mvm, vif);
 743                         iwl_mvm_configure_mcast_filter(mvm, vif);
 744                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 745                         /* remove AP station now that the MAC is unassoc */
 746                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 747                         if (ret)
 748                                 IWL_ERR(mvm, "failed to remove AP station\n");
 749                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 750                         /* remove quota for this interface */
 751                         ret = iwl_mvm_update_quotas(mvm, NULL);
 752                         if (ret)
 753                                 IWL_ERR(mvm, "failed to update quotas\n");
 754                 }
 755         } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 756                 /*
 757                  * We received a beacon _after_ association so
 758                  * remove the session protection.
 759                  */
 760                 iwl_mvm_remove_time_event(mvm, mvmvif,
 761                                           &mvmvif->time_event_data);
 762         } else if (changes & BSS_CHANGED_PS) {
 763                 /*
 764                  * TODO: remove this temporary code.
 765                  * Currently MVM FW supports power management only on single
 766                  * MAC. Avoid power mode update if more than one interface
 767                  * is active.
 768                  */
 769                 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 770                                    mvm->vif_count);
 771                 if (mvm->vif_count == 1) {
 772                         ret = iwl_mvm_power_update_mode(mvm, vif);
 773                         if (ret)
 774                                 IWL_ERR(mvm, "failed to update power mode\n");
 775                 }
 776         }
 777 }
 778
 779 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 780 {
 781         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 782         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 783         int ret;
 784
 785         mutex_lock(&mvm->mutex);
 786
 787         /* Send the beacon template */
 788         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 789         if (ret)
 790                 goto out_unlock;
 791
 792         /* Add the mac context */
 793         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 794         if (ret)
 795                 goto out_unlock;
 796
 797         /* Perform the binding */
 798         ret = iwl_mvm_binding_add_vif(mvm, vif);
 799         if (ret)
 800                 goto out_remove;
 801
 802         mvmvif->ap_active = true;
 803
 804         /* Send the bcast station. At this stage the TBTT and DTIM time events
 805          * are added and applied to the scheduler */
 806         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 807         if (ret)
 808                 goto out_unbind;
 809
 810         ret = iwl_mvm_update_quotas(mvm, vif);
 811         if (ret)
 812                 goto out_rm_bcast;
 813
 814         /* Need to update the P2P Device MAC */
 815         if (vif->p2p && mvm->p2p_device_vif)
 816                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 817
 818         mutex_unlock(&mvm->mutex);
 819         return 0;
 820
 821 out_rm_bcast:
 822         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 823 out_unbind:
 824         iwl_mvm_binding_remove_vif(mvm, vif);
 825 out_remove:
 826         iwl_mvm_mac_ctxt_remove(mvm, vif);
 827 out_unlock:
 828         mutex_unlock(&mvm->mutex);
 829         return ret;
 830 }
 831
 832 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 833 {
 834         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 835         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 836
 837         iwl_mvm_prepare_mac_removal(mvm, vif);
 838
 839         mutex_lock(&mvm->mutex);
 840
 841         mvmvif->ap_active = false;
 842
 843         /* Need to update the P2P Device MAC */
 844         if (vif->p2p && mvm->p2p_device_vif)
 845                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 846
 847         iwl_mvm_update_quotas(mvm, NULL);
 848         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 849         iwl_mvm_binding_remove_vif(mvm, vif);
 850         iwl_mvm_mac_ctxt_remove(mvm, vif);
 851
 852         mutex_unlock(&mvm->mutex);
 853 }
 854
 855 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
 856                                         struct ieee80211_vif *vif,
 857                                         struct ieee80211_bss_conf *bss_conf,
 858                                         u32 changes)
 859 {
 860         /* Need to send a new beacon template to the FW */
 861         if (changes & BSS_CHANGED_BEACON) {
 862                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
 863                         IWL_WARN(mvm, "Failed updating beacon data\n");
 864         }
 865 }
 866
 867 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
 868                                      struct ieee80211_vif *vif,
 869                                      struct ieee80211_bss_conf *bss_conf,
 870                                      u32 changes)
 871 {
 872         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 873
 874         mutex_lock(&mvm->mutex);
 875
 876         switch (vif->type) {
 877         case NL80211_IFTYPE_STATION:
 878                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
 879                 break;
 880         case NL80211_IFTYPE_AP:
 881                 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
 882                 break;
 883         default:
 884                 /* shouldn't happen */
 885                 WARN_ON_ONCE(1);
 886         }
 887
 888         mutex_unlock(&mvm->mutex);
 889 }
 890
 891 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 892                                struct ieee80211_vif *vif,
 893                                struct cfg80211_scan_request *req)
 894 {
 895         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 896         int ret;
 897
 898         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
 899                 return -EINVAL;
 900
 901         mutex_lock(&mvm->mutex);
 902
 903         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
 904                 ret = iwl_mvm_scan_request(mvm, vif, req);
 905         else
 906                 ret = -EBUSY;
 907
 908         mutex_unlock(&mvm->mutex);
 909
 910         return ret;
 911 }
 912
 913 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 914                                        struct ieee80211_vif *vif)
 915 {
 916         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 917
 918         mutex_lock(&mvm->mutex);
 919
 920         iwl_mvm_cancel_scan(mvm);
 921
 922         mutex_unlock(&mvm->mutex);
 923 }
 924
 925 static void
 926 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
 927                                   struct ieee80211_sta *sta, u16 tid,
 928                                   int num_frames,
 929                                   enum ieee80211_frame_release_type reason,
 930                                   bool more_data)
 931 {
 932         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 933
 934         /* TODO: how do we tell the fw to send frames for a specific TID */
 935
 936         /*
 937          * The fw will send EOSP notification when the last frame will be
 938          * transmitted.
 939          */
 940         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
 941 }
 942
 943 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 944                                    struct ieee80211_vif *vif,
 945                                    enum sta_notify_cmd cmd,
 946                                    struct ieee80211_sta *sta)
 947 {
 948         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 949         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 950
 951         switch (cmd) {
 952         case STA_NOTIFY_SLEEP:
 953                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
 954                         ieee80211_sta_block_awake(hw, sta, true);
 955                 /*
 956                  * The fw updates the STA to be asleep. Tx packets on the Tx
 957                  * queues to this station will not be transmitted. The fw will
 958                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
 959                  */
 960                 break;
 961         case STA_NOTIFY_AWAKE:
 962                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
 963                         break;
 964                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
 965                 break;
 966         default:
 967                 break;
 968         }
 969 }
 970
 971 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 972                                  struct ieee80211_vif *vif,
 973                                  struct ieee80211_sta *sta,
 974                                  enum ieee80211_sta_state old_state,
 975                                  enum ieee80211_sta_state new_state)
 976 {
 977         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 978         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 979         int ret;
 980
 981         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
 982                            sta->addr, old_state, new_state);
 983
 984         /* this would be a mac80211 bug ... but don't crash */
 985         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
 986                 return -EINVAL;
 987
 988         /* if a STA is being removed, reuse its ID */
 989         flush_work(&mvm->sta_drained_wk);
 990
 991         mutex_lock(&mvm->mutex);
 992         if (old_state == IEEE80211_STA_NOTEXIST &&
 993             new_state == IEEE80211_STA_NONE) {
 994                 /*
 995                  * Firmware bug - it'll crash if the beacon interval is less
 996                  * than 16. We can't avoid connecting at all, so refuse the
 997                  * station state change, this will cause mac80211 to abandon
 998                  * attempts to connect to this AP, and eventually wpa_s will
 999                  * blacklist the AP...
1000                  */
1001                 if (vif->type == NL80211_IFTYPE_STATION &&
1002                     vif->bss_conf.beacon_int < 16) {
1003                         IWL_ERR(mvm,
1004                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1005                                 sta->addr, vif->bss_conf.beacon_int);
1006                         ret = -EINVAL;
1007                         goto out_unlock;
1008                 }
1009                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1010         } else if (old_state == IEEE80211_STA_NONE &&
1011                    new_state == IEEE80211_STA_AUTH) {
1012                 ret = 0;
1013         } else if (old_state == IEEE80211_STA_AUTH &&
1014                    new_state == IEEE80211_STA_ASSOC) {
1015                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1016                 if (ret == 0)
1017                         iwl_mvm_rs_rate_init(mvm, sta,
1018                                              mvmvif->phy_ctxt->channel->band);
1019         } else if (old_state == IEEE80211_STA_ASSOC &&
1020                    new_state == IEEE80211_STA_AUTHORIZED) {
1021                 ret = 0;
1022         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1023                    new_state == IEEE80211_STA_ASSOC) {
1024                 ret = 0;
1025         } else if (old_state == IEEE80211_STA_ASSOC &&
1026                    new_state == IEEE80211_STA_AUTH) {
1027                 ret = 0;
1028         } else if (old_state == IEEE80211_STA_AUTH &&
1029                    new_state == IEEE80211_STA_NONE) {
1030                 ret = 0;
1031         } else if (old_state == IEEE80211_STA_NONE &&
1032                    new_state == IEEE80211_STA_NOTEXIST) {
1033                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1034         } else {
1035                 ret = -EIO;
1036         }
1037  out_unlock:
1038         mutex_unlock(&mvm->mutex);
1039
1040         return ret;
1041 }
1042
1043 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1044 {
1045         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1046
1047         mvm->rts_threshold = value;
1048
1049         return 0;
1050 }
1051
1052 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1053                                struct ieee80211_vif *vif, u16 ac,
1054                                const struct ieee80211_tx_queue_params *params)
1055 {
1056         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1057         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1058
1059         mvmvif->queue_params[ac] = *params;
1060
1061         /*
1062          * No need to update right away, we'll get BSS_CHANGED_QOS
1063          * The exception is P2P_DEVICE interface which needs immediate update.
1064          */
1065         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1066                 int ret;
1067
1068                 mutex_lock(&mvm->mutex);
1069                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1070                 mutex_unlock(&mvm->mutex);
1071                 return ret;
1072         }
1073         return 0;
1074 }
1075
1076 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1077                                       struct ieee80211_vif *vif)
1078 {
1079         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1080         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1081                            200 + vif->bss_conf.beacon_int);
1082         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1083                                100 + vif->bss_conf.beacon_int);
1084
1085         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1086                 return;
1087
1088         mutex_lock(&mvm->mutex);
1089         /* Try really hard to protect the session and hear a beacon */
1090         iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1091         mutex_unlock(&mvm->mutex);
1092 }
1093
1094 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1095                                enum set_key_cmd cmd,
1096                                struct ieee80211_vif *vif,
1097                                struct ieee80211_sta *sta,
1098                                struct ieee80211_key_conf *key)
1099 {
1100         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1101         int ret;
1102
1103         if (iwlwifi_mod_params.sw_crypto) {
1104                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1105                 return -EOPNOTSUPP;
1106         }
1107
1108         switch (key->cipher) {
1109         case WLAN_CIPHER_SUITE_TKIP:
1110                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1111                 /* fall-through */
1112         case WLAN_CIPHER_SUITE_CCMP:
1113                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1114                 break;
1115         case WLAN_CIPHER_SUITE_AES_CMAC:
1116                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1117                 break;
1118         case WLAN_CIPHER_SUITE_WEP40:
1119         case WLAN_CIPHER_SUITE_WEP104:
1120                 /*
1121                  * Support for TX only, at least for now, so accept
1122                  * the key and do nothing else. Then mac80211 will
1123                  * pass it for TX but we don't have to use it for RX.
1124                  */
1125                 return 0;
1126         default:
1127                 return -EOPNOTSUPP;
1128         }
1129
1130         mutex_lock(&mvm->mutex);
1131
1132         switch (cmd) {
1133         case SET_KEY:
1134                 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1135                         /* GTK on AP interface is a TX-only key, return 0 */
1136                         ret = 0;
1137                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1138                         break;
1139                 }
1140
1141                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1142                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1143                 if (ret) {
1144                         IWL_WARN(mvm, "set key failed\n");
1145                         /*
1146                          * can't add key for RX, but we don't need it
1147                          * in the device for TX so still return 0
1148                          */
1149                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1150                         ret = 0;
1151                 }
1152
1153                 break;
1154         case DISABLE_KEY:
1155                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1156                         ret = 0;
1157                         break;
1158                 }
1159
1160                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1161                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1162                 break;
1163         default:
1164                 ret = -EINVAL;
1165         }
1166
1167         mutex_unlock(&mvm->mutex);
1168         return ret;
1169 }
1170
1171 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1172                                         struct ieee80211_vif *vif,
1173                                         struct ieee80211_key_conf *keyconf,
1174                                         struct ieee80211_sta *sta,
1175                                         u32 iv32, u16 *phase1key)
1176 {
1177         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1178
1179         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1180 }
1181
1182
1183 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1184                        struct ieee80211_vif *vif,
1185                        struct ieee80211_channel *channel,
1186                        int duration,
1187                        enum ieee80211_roc_type type)
1188 {
1189         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1190         struct cfg80211_chan_def chandef;
1191         int ret;
1192
1193         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1194                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1195                 return -EINVAL;
1196         }
1197
1198         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1199                            duration, type);
1200
1201         mutex_lock(&mvm->mutex);
1202
1203         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1204         ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1205                                        &chandef, 1, 1);
1206
1207         /* Schedule the time events */
1208         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1209
1210         mutex_unlock(&mvm->mutex);
1211         IWL_DEBUG_MAC80211(mvm, "leave\n");
1212
1213         return ret;
1214 }
1215
1216 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1217 {
1218         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1219
1220         IWL_DEBUG_MAC80211(mvm, "enter\n");
1221
1222         mutex_lock(&mvm->mutex);
1223         iwl_mvm_stop_p2p_roc(mvm);
1224         mutex_unlock(&mvm->mutex);
1225
1226         IWL_DEBUG_MAC80211(mvm, "leave\n");
1227         return 0;
1228 }
1229
1230 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1231                                struct ieee80211_chanctx_conf *ctx)
1232 {
1233         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1234         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1235         int ret;
1236
1237         mutex_lock(&mvm->mutex);
1238
1239         IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1240         ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1241                                    ctx->rx_chains_static,
1242                                    ctx->rx_chains_dynamic);
1243         mutex_unlock(&mvm->mutex);
1244         return ret;
1245 }
1246
1247 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1248                                    struct ieee80211_chanctx_conf *ctx)
1249 {
1250         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1251         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1252
1253         mutex_lock(&mvm->mutex);
1254         iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1255         mutex_unlock(&mvm->mutex);
1256 }
1257
1258 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1259                                    struct ieee80211_chanctx_conf *ctx,
1260                                    u32 changed)
1261 {
1262         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1263         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1264
1265         mutex_lock(&mvm->mutex);
1266         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1267                                  ctx->rx_chains_static,
1268                                  ctx->rx_chains_dynamic);
1269         mutex_unlock(&mvm->mutex);
1270 }
1271
1272 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1273                                       struct ieee80211_vif *vif,
1274                                       struct ieee80211_chanctx_conf *ctx)
1275 {
1276         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1277         struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1278         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1279         int ret;
1280
1281         mutex_lock(&mvm->mutex);
1282
1283         mvmvif->phy_ctxt = phyctx;
1284
1285         switch (vif->type) {
1286         case NL80211_IFTYPE_AP:
1287                 /*
1288                  * The AP binding flow is handled as part of the start_ap flow
1289                  * (in bss_info_changed).
1290                  */
1291                 ret = 0;
1292                 goto out_unlock;
1293         case NL80211_IFTYPE_STATION:
1294         case NL80211_IFTYPE_ADHOC:
1295         case NL80211_IFTYPE_MONITOR:
1296                 break;
1297         default:
1298                 ret = -EINVAL;
1299                 goto out_unlock;
1300         }
1301
1302         ret = iwl_mvm_binding_add_vif(mvm, vif);
1303         if (ret)
1304                 goto out_unlock;
1305
1306         /*
1307          * Setting the quota at this stage is only required for monitor
1308          * interfaces. For the other types, the bss_info changed flow
1309          * will handle quota settings.
1310          */
1311         if (vif->type == NL80211_IFTYPE_MONITOR) {
1312                 mvmvif->monitor_active = true;
1313                 ret = iwl_mvm_update_quotas(mvm, vif);
1314                 if (ret)
1315                         goto out_remove_binding;
1316         }
1317
1318         goto out_unlock;
1319
1320  out_remove_binding:
1321         iwl_mvm_binding_remove_vif(mvm, vif);
1322  out_unlock:
1323         mutex_unlock(&mvm->mutex);
1324         if (ret)
1325                 mvmvif->phy_ctxt = NULL;
1326         return ret;
1327 }
1328
1329 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1330                                          struct ieee80211_vif *vif,
1331                                          struct ieee80211_chanctx_conf *ctx)
1332 {
1333         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1334         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1335
1336         mutex_lock(&mvm->mutex);
1337
1338         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1339
1340         if (vif->type == NL80211_IFTYPE_AP)
1341                 goto out_unlock;
1342
1343         switch (vif->type) {
1344         case NL80211_IFTYPE_MONITOR:
1345                 mvmvif->monitor_active = false;
1346                 iwl_mvm_update_quotas(mvm, NULL);
1347                 break;
1348         default:
1349                 break;
1350         }
1351
1352         iwl_mvm_binding_remove_vif(mvm, vif);
1353 out_unlock:
1354         mvmvif->phy_ctxt = NULL;
1355         mutex_unlock(&mvm->mutex);
1356 }
1357
1358 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1359                            struct ieee80211_sta *sta,
1360                            bool set)
1361 {
1362         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1363         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1364
1365         if (!mvm_sta || !mvm_sta->vif) {
1366                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1367                 return -EINVAL;
1368         }
1369
1370         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1371 }
1372
1373 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1374                                       struct ieee80211_vif *vif,
1375                                       enum ieee80211_rssi_event rssi_event)
1376 {
1377         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1378
1379         iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1380 }
1381
1382 struct ieee80211_ops iwl_mvm_hw_ops = {
1383         .tx = iwl_mvm_mac_tx,
1384         .ampdu_action = iwl_mvm_mac_ampdu_action,
1385         .start = iwl_mvm_mac_start,
1386         .restart_complete = iwl_mvm_mac_restart_complete,
1387         .stop = iwl_mvm_mac_stop,
1388         .add_interface = iwl_mvm_mac_add_interface,
1389         .remove_interface = iwl_mvm_mac_remove_interface,
1390         .config = iwl_mvm_mac_config,
1391         .configure_filter = iwl_mvm_configure_filter,
1392         .bss_info_changed = iwl_mvm_bss_info_changed,
1393         .hw_scan = iwl_mvm_mac_hw_scan,
1394         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1395         .sta_state = iwl_mvm_mac_sta_state,
1396         .sta_notify = iwl_mvm_mac_sta_notify,
1397         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1398         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1399         .conf_tx = iwl_mvm_mac_conf_tx,
1400         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1401         .set_key = iwl_mvm_mac_set_key,
1402         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1403         .remain_on_channel = iwl_mvm_roc,
1404         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1405         .rssi_callback = iwl_mvm_mac_rssi_callback,
1406
1407         .add_chanctx = iwl_mvm_add_chanctx,
1408         .remove_chanctx = iwl_mvm_remove_chanctx,
1409         .change_chanctx = iwl_mvm_change_chanctx,
1410         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1411         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1412
1413         .start_ap = iwl_mvm_start_ap,
1414         .stop_ap = iwl_mvm_stop_ap,
1415
1416         .set_tim = iwl_mvm_set_tim,
1417
1418 #ifdef CONFIG_PM_SLEEP
1419         /* look at d3.c */
1420         .suspend = iwl_mvm_suspend,
1421         .resume = iwl_mvm_resume,
1422         .set_wakeup = iwl_mvm_set_wakeup,
1423         .set_rekey_data = iwl_mvm_set_rekey_data,
1424 #if IS_ENABLED(CONFIG_IPV6)
1425         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1426 #endif
1427         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1428 #endif
1429 };