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
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called LICENSE.GPL.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  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 <net/mac80211.h>
  69
  70 #include "iwl-op-mode.h"
  71 #include "iwl-io.h"
  72 #include "mvm.h"
  73 #include "sta.h"
  74 #include "time-event.h"
  75 #include "iwl-eeprom-parse.h"
  76 #include "fw-api-scan.h"
  77 #include "iwl-phy-db.h"
  78
  79 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  80         {
  81                 .max = 1,
  82                 .types = BIT(NL80211_IFTYPE_STATION) |
  83                         BIT(NL80211_IFTYPE_AP),
  84         },
  85         {
  86                 .max = 1,
  87                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
  88                         BIT(NL80211_IFTYPE_P2P_GO),
  89         },
  90         {
  91                 .max = 1,
  92                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  93         },
  94 };
  95
  96 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
  97         {
  98                 .num_different_channels = 1,
  99                 .max_interfaces = 3,
 100                 .limits = iwl_mvm_limits,
 101                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 102         },
 103 };
 104
 105 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 106 {
 107         struct ieee80211_hw *hw = mvm->hw;
 108         int num_mac, ret;
 109
 110         /* Tell mac80211 our characteristics */
 111         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 112                     IEEE80211_HW_SPECTRUM_MGMT |
 113                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 114                     IEEE80211_HW_QUEUE_CONTROL |
 115                     IEEE80211_HW_WANT_MONITOR_VIF |
 116                     IEEE80211_HW_SCAN_WHILE_IDLE |
 117                     IEEE80211_HW_SUPPORTS_PS |
 118                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 119                     IEEE80211_HW_AMPDU_AGGREGATION;
 120
 121         hw->queues = IWL_FIRST_AMPDU_QUEUE;
 122         hw->offchannel_tx_hw_queue = IWL_OFFCHANNEL_QUEUE;
 123         hw->rate_control_algorithm = "iwl-mvm-rs";
 124
 125         /*
 126          * Enable 11w if advertised by firmware and software crypto
 127          * is not enabled (as the firmware will interpret some mgmt
 128          * packets, so enabling it with software crypto isn't safe)
 129          */
 130         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 131             !iwlwifi_mod_params.sw_crypto)
 132                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 133
 134         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 135         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 136         hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
 137
 138         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 139                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 140                 BIT(NL80211_IFTYPE_AP) |
 141                 BIT(NL80211_IFTYPE_P2P_GO) |
 142                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 143
 144         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 145                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
 146                             WIPHY_FLAG_IBSS_RSN;
 147
 148         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 149         hw->wiphy->n_iface_combinations =
 150                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 151
 152         hw->wiphy->max_remain_on_channel_duration = 500;
 153         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 154
 155         /* Extract MAC address */
 156         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 157         hw->wiphy->addresses = mvm->addresses;
 158         hw->wiphy->n_addresses = 1;
 159         num_mac = mvm->nvm_data->n_hw_addrs;
 160         if (num_mac > 1) {
 161                 memcpy(mvm->addresses[1].addr, mvm->addresses[0].addr,
 162                        ETH_ALEN);
 163                 mvm->addresses[1].addr[5]++;
 164                 hw->wiphy->n_addresses++;
 165         }
 166
 167         /* we create the 802.11 header and a max-length SSID element */
 168         hw->wiphy->max_scan_ie_len =
 169                 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 170         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 171
 172         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 173                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 174                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 175         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 176                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 177                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 178
 179         hw->wiphy->hw_version = mvm->trans->hw_id;
 180
 181         if (iwlwifi_mod_params.power_save)
 182                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 183         else
 184                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 185
 186         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 187                                NL80211_FEATURE_P2P_GO_OPPPS;
 188
 189         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 190
 191 #ifdef CONFIG_PM_SLEEP
 192         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 193             mvm->trans->ops->d3_suspend &&
 194             mvm->trans->ops->d3_resume &&
 195             device_can_wakeup(mvm->trans->dev)) {
 196                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 197                                           WIPHY_WOWLAN_DISCONNECT |
 198                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 199                                           WIPHY_WOWLAN_RFKILL_RELEASE;
 200                 if (!iwlwifi_mod_params.sw_crypto)
 201                         hw->wiphy->wowlan.flags |=
 202                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 203                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 204                                 WIPHY_WOWLAN_4WAY_HANDSHAKE;
 205
 206                 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 207                 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 208                 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 209         }
 210 #endif
 211
 212         ret = iwl_mvm_leds_init(mvm);
 213         if (ret)
 214                 return ret;
 215
 216         return ieee80211_register_hw(mvm->hw);
 217 }
 218
 219 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 220                            struct ieee80211_tx_control *control,
 221                            struct sk_buff *skb)
 222 {
 223         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 224
 225         if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
 226                 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
 227                 goto drop;
 228         }
 229
 230         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_OFFCHANNEL_QUEUE &&
 231             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 232                 goto drop;
 233
 234         if (control->sta) {
 235                 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
 236                         goto drop;
 237                 return;
 238         }
 239
 240         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 241                 goto drop;
 242         return;
 243  drop:
 244         ieee80211_free_txskb(hw, skb);
 245 }
 246
 247 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 248                                     struct ieee80211_vif *vif,
 249                                     enum ieee80211_ampdu_mlme_action action,
 250                                     struct ieee80211_sta *sta, u16 tid,
 251                                     u16 *ssn, u8 buf_size)
 252 {
 253         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 254         int ret;
 255
 256         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 257                      sta->addr, tid, action);
 258
 259         if (!(mvm->nvm_data->sku_cap_11n_enable))
 260                 return -EACCES;
 261
 262         mutex_lock(&mvm->mutex);
 263
 264         switch (action) {
 265         case IEEE80211_AMPDU_RX_START:
 266                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
 267                         ret = -EINVAL;
 268                         break;
 269                 }
 270                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 271                 break;
 272         case IEEE80211_AMPDU_RX_STOP:
 273                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 274                 break;
 275         case IEEE80211_AMPDU_TX_START:
 276                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 277                 break;
 278         case IEEE80211_AMPDU_TX_STOP_CONT:
 279         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 280         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 281                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 282                 break;
 283         case IEEE80211_AMPDU_TX_OPERATIONAL:
 284                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 285                 break;
 286         default:
 287                 WARN_ON_ONCE(1);
 288                 ret = -EINVAL;
 289                 break;
 290         }
 291         mutex_unlock(&mvm->mutex);
 292
 293         return ret;
 294 }
 295
 296 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 297                                      struct ieee80211_vif *vif)
 298 {
 299         struct iwl_mvm *mvm = data;
 300         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 301
 302         mvmvif->uploaded = false;
 303         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 304
 305         /* does this make sense at all? */
 306         mvmvif->color++;
 307
 308         spin_lock_bh(&mvm->time_event_lock);
 309         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 310         spin_unlock_bh(&mvm->time_event_lock);
 311
 312         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 313                 mvmvif->phy_ctxt = NULL;
 314 }
 315
 316 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 317 {
 318         iwl_trans_stop_device(mvm->trans);
 319         iwl_trans_stop_hw(mvm->trans, false);
 320
 321         mvm->scan_status = IWL_MVM_SCAN_NONE;
 322
 323         /* just in case one was running */
 324         ieee80211_remain_on_channel_expired(mvm->hw);
 325
 326         ieee80211_iterate_active_interfaces_atomic(
 327                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 328                 iwl_mvm_cleanup_iterator, mvm);
 329
 330         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 331         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 332
 333         ieee80211_wake_queues(mvm->hw);
 334
 335         mvm->vif_count = 0;
 336 }
 337
 338 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 339 {
 340         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 341         int ret;
 342
 343         mutex_lock(&mvm->mutex);
 344
 345         /* Clean up some internal and mac80211 state on restart */
 346         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 347                 iwl_mvm_restart_cleanup(mvm);
 348
 349         ret = iwl_mvm_up(mvm);
 350         mutex_unlock(&mvm->mutex);
 351
 352         return ret;
 353 }
 354
 355 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 356 {
 357         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 358         int ret;
 359
 360         mutex_lock(&mvm->mutex);
 361
 362         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 363         ret = iwl_mvm_update_quotas(mvm, NULL);
 364         if (ret)
 365                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 366                         ret);
 367
 368         mutex_unlock(&mvm->mutex);
 369 }
 370
 371 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 372 {
 373         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 374
 375         flush_work(&mvm->async_handlers_wk);
 376
 377         mutex_lock(&mvm->mutex);
 378         /* async_handlers_wk is now blocked */
 379
 380         /*
 381          * The work item could be running or queued if the
 382          * ROC time event stops just as we get here.
 383          */
 384         cancel_work_sync(&mvm->roc_done_wk);
 385
 386         iwl_trans_stop_device(mvm->trans);
 387         iwl_trans_stop_hw(mvm->trans, false);
 388
 389         iwl_mvm_async_handlers_purge(mvm);
 390         /* async_handlers_list is empty and will stay empty: HW is stopped */
 391
 392         /* the fw is stopped, the aux sta is dead: clean up driver state */
 393         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 394
 395         mutex_unlock(&mvm->mutex);
 396
 397         /*
 398          * The worker might have been waiting for the mutex, let it run and
 399          * discover that its list is now empty.
 400          */
 401         cancel_work_sync(&mvm->async_handlers_wk);
 402 }
 403
 404 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
 405                                         struct ieee80211_vif *vif)
 406 {
 407         struct iwl_mvm *mvm = data;
 408         int ret;
 409
 410         ret = iwl_mvm_power_disable(mvm, vif);
 411         if (ret)
 412                 IWL_ERR(mvm, "failed to disable power management\n");
 413 }
 414
 415 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 416                                           struct ieee80211_vif *vif)
 417 {
 418         struct iwl_mvm *mvm = data;
 419
 420         iwl_mvm_power_update_mode(mvm, vif);
 421 }
 422
 423 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 424                                      struct ieee80211_vif *vif)
 425 {
 426         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 427         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 428         int ret;
 429
 430         /*
 431          * Not much to do here. The stack will not allow interface
 432          * types or combinations that we didn't advertise, so we
 433          * don't really have to check the types.
 434          */
 435
 436         mutex_lock(&mvm->mutex);
 437
 438         /* Allocate resources for the MAC context, and add it the the fw  */
 439         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 440         if (ret)
 441                 goto out_unlock;
 442
 443         /*
 444          * The AP binding flow can be done only after the beacon
 445          * template is configured (which happens only in the mac80211
 446          * start_ap() flow), and adding the broadcast station can happen
 447          * only after the binding.
 448          * In addition, since modifying the MAC before adding a bcast
 449          * station is not allowed by the FW, delay the adding of MAC context to
 450          * the point where we can also add the bcast station.
 451          * In short: there's not much we can do at this point, other than
 452          * allocating resources :)
 453          */
 454         if (vif->type == NL80211_IFTYPE_AP) {
 455                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 456                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 457                                                qmask);
 458                 if (ret) {
 459                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 460                         goto out_release;
 461                 }
 462
 463                 goto out_unlock;
 464         }
 465
 466         /*
 467          * TODO: remove this temporary code.
 468          * Currently MVM FW supports power management only on single MAC.
 469          * Iterate and disable PM on all active interfaces.
 470          * Note: the method below does not count the new interface being added
 471          * at this moment.
 472          */
 473         mvm->vif_count++;
 474         if (mvm->vif_count > 1) {
 475                 IWL_DEBUG_MAC80211(mvm,
 476                                    "Disable power on existing interfaces\n");
 477                 ieee80211_iterate_active_interfaces_atomic(
 478                                             mvm->hw,
 479                                             IEEE80211_IFACE_ITER_NORMAL,
 480                                             iwl_mvm_pm_disable_iterator, mvm);
 481         }
 482
 483         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 484         if (ret)
 485                 goto out_release;
 486
 487         /*
 488          * Update power state on the new interface. Admittedly, based on
 489          * mac80211 logics this power update will disable power management
 490          */
 491         iwl_mvm_power_update_mode(mvm, vif);
 492
 493         /*
 494          * P2P_DEVICE interface does not have a channel context assigned to it,
 495          * so a dedicated PHY context is allocated to it and the corresponding
 496          * MAC context is bound to it at this stage.
 497          */
 498         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 499                 struct ieee80211_channel *chan;
 500                 struct cfg80211_chan_def chandef;
 501
 502                 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
 503
 504                 /*
 505                  * The channel used here isn't relevant as it's
 506                  * going to be overwritten as part of the ROC flow.
 507                  * For now use the first channel we have.
 508                  */
 509                 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 510                 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 511                 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
 512                                            &chandef, 1, 1);
 513                 if (ret)
 514                         goto out_remove_mac;
 515
 516                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 517                 if (ret)
 518                         goto out_remove_phy;
 519
 520                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 521                 if (ret)
 522                         goto out_unbind;
 523
 524                 /* Save a pointer to p2p device vif, so it can later be used to
 525                  * update the p2p device MAC when a GO is started/stopped */
 526                 mvm->p2p_device_vif = vif;
 527         }
 528
 529         goto out_unlock;
 530
 531  out_unbind:
 532         iwl_mvm_binding_remove_vif(mvm, vif);
 533  out_remove_phy:
 534         iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 535  out_remove_mac:
 536         mvmvif->phy_ctxt = NULL;
 537         iwl_mvm_mac_ctxt_remove(mvm, vif);
 538  out_release:
 539         /*
 540          * TODO: remove this temporary code.
 541          * Currently MVM FW supports power management only on single MAC.
 542          * Check if only one additional interface remains after rereasing
 543          * current one. Update power mode on the remaining interface.
 544          */
 545         mvm->vif_count--;
 546         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 547                            mvm->vif_count);
 548         if (mvm->vif_count == 1) {
 549                 ieee80211_iterate_active_interfaces(
 550                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 551                                         iwl_mvm_power_update_iterator, mvm);
 552         }
 553         iwl_mvm_mac_ctxt_release(mvm, vif);
 554  out_unlock:
 555         mutex_unlock(&mvm->mutex);
 556
 557         return ret;
 558 }
 559
 560 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 561                                          struct ieee80211_vif *vif)
 562 {
 563         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 564         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 565         u32 tfd_msk = 0, ac;
 566
 567         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 568                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 569                         tfd_msk |= BIT(vif->hw_queue[ac]);
 570
 571         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 572                 tfd_msk |= BIT(vif->cab_queue);
 573
 574         if (tfd_msk) {
 575                 mutex_lock(&mvm->mutex);
 576                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 577                 mutex_unlock(&mvm->mutex);
 578         }
 579
 580         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 581                 /*
 582                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 583                  * We assume here that all the packets sent to the OFFCHANNEL
 584                  * queue are sent in ROC session.
 585                  */
 586                 flush_work(&mvm->roc_done_wk);
 587         } else {
 588                 /*
 589                  * By now, all the AC queues are empty. The AGG queues are
 590                  * empty too. We already got all the Tx responses for all the
 591                  * packets in the queues. The drain work can have been
 592                  * triggered. Flush it. This work item takes the mutex, so kill
 593                  * it before we take it.
 594                  */
 595                 flush_work(&mvm->sta_drained_wk);
 596         }
 597
 598         mutex_lock(&mvm->mutex);
 599
 600         /*
 601          * For AP/GO interface, the tear down of the resources allocated to the
 602          * interface should be handled as part of the bss_info_changed flow.
 603          */
 604         if (vif->type == NL80211_IFTYPE_AP) {
 605                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 606                 goto out_release;
 607         }
 608
 609         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 610                 mvm->p2p_device_vif = NULL;
 611                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 612                 iwl_mvm_binding_remove_vif(mvm, vif);
 613                 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 614                 mvmvif->phy_ctxt = NULL;
 615         }
 616
 617         /*
 618          * TODO: remove this temporary code.
 619          * Currently MVM FW supports power management only on single MAC.
 620          * Check if only one additional interface remains after removing
 621          * current one. Update power mode on the remaining interface.
 622          */
 623         if (mvm->vif_count)
 624                 mvm->vif_count--;
 625         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 626                            mvm->vif_count);
 627         if (mvm->vif_count == 1) {
 628                 ieee80211_iterate_active_interfaces(
 629                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 630                                         iwl_mvm_power_update_iterator, mvm);
 631         }
 632
 633         iwl_mvm_mac_ctxt_remove(mvm, vif);
 634
 635 out_release:
 636         iwl_mvm_mac_ctxt_release(mvm, vif);
 637         mutex_unlock(&mvm->mutex);
 638 }
 639
 640 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 641 {
 642         return 0;
 643 }
 644
 645 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 646                                      unsigned int changed_flags,
 647                                      unsigned int *total_flags,
 648                                      u64 multicast)
 649 {
 650         *total_flags = 0;
 651 }
 652
 653 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 654                                              struct ieee80211_vif *vif,
 655                                              struct ieee80211_bss_conf *bss_conf,
 656                                              u32 changes)
 657 {
 658         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 659         int ret;
 660
 661         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 662         if (ret)
 663                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 664
 665         if (changes & BSS_CHANGED_ASSOC) {
 666                 if (bss_conf->assoc) {
 667                         /* add quota for this interface */
 668                         ret = iwl_mvm_update_quotas(mvm, vif);
 669                         if (ret) {
 670                                 IWL_ERR(mvm, "failed to update quotas\n");
 671                                 return;
 672                         }
 673                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 674                         /* remove AP station now that the MAC is unassoc */
 675                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 676                         if (ret)
 677                                 IWL_ERR(mvm, "failed to remove AP station\n");
 678                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 679                         /* remove quota for this interface */
 680                         ret = iwl_mvm_update_quotas(mvm, NULL);
 681                         if (ret)
 682                                 IWL_ERR(mvm, "failed to update quotas\n");
 683                 }
 684         } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 685                 /*
 686                  * We received a beacon _after_ association so
 687                  * remove the session protection.
 688                  */
 689                 iwl_mvm_remove_time_event(mvm, mvmvif,
 690                                           &mvmvif->time_event_data);
 691         } else if (changes & BSS_CHANGED_PS) {
 692                 /*
 693                  * TODO: remove this temporary code.
 694                  * Currently MVM FW supports power management only on single
 695                  * MAC. Avoid power mode update if more than one interface
 696                  * is active.
 697                  */
 698                 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 699                                    mvm->vif_count);
 700                 if (mvm->vif_count == 1) {
 701                         ret = iwl_mvm_power_update_mode(mvm, vif);
 702                         if (ret)
 703                                 IWL_ERR(mvm, "failed to update power mode\n");
 704                 }
 705         }
 706 }
 707
 708 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 709 {
 710         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 711         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 712         int ret;
 713
 714         mutex_lock(&mvm->mutex);
 715
 716         /* Send the beacon template */
 717         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 718         if (ret)
 719                 goto out_unlock;
 720
 721         /* Add the mac context */
 722         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 723         if (ret)
 724                 goto out_unlock;
 725
 726         /* Perform the binding */
 727         ret = iwl_mvm_binding_add_vif(mvm, vif);
 728         if (ret)
 729                 goto out_remove;
 730
 731         mvmvif->ap_active = true;
 732
 733         /* Send the bcast station. At this stage the TBTT and DTIM time events
 734          * are added and applied to the scheduler */
 735         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 736         if (ret)
 737                 goto out_unbind;
 738
 739         ret = iwl_mvm_update_quotas(mvm, vif);
 740         if (ret)
 741                 goto out_rm_bcast;
 742
 743         /* Need to update the P2P Device MAC */
 744         if (vif->p2p && mvm->p2p_device_vif)
 745                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 746
 747         mutex_unlock(&mvm->mutex);
 748         return 0;
 749
 750 out_rm_bcast:
 751         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 752 out_unbind:
 753         iwl_mvm_binding_remove_vif(mvm, vif);
 754 out_remove:
 755         iwl_mvm_mac_ctxt_remove(mvm, vif);
 756 out_unlock:
 757         mutex_unlock(&mvm->mutex);
 758         return ret;
 759 }
 760
 761 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 762 {
 763         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 764         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 765
 766         mutex_lock(&mvm->mutex);
 767
 768         mvmvif->ap_active = false;
 769
 770         /* Need to update the P2P Device MAC */
 771         if (vif->p2p && mvm->p2p_device_vif)
 772                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 773
 774         iwl_mvm_update_quotas(mvm, NULL);
 775         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 776         iwl_mvm_binding_remove_vif(mvm, vif);
 777         iwl_mvm_mac_ctxt_remove(mvm, vif);
 778
 779         mutex_unlock(&mvm->mutex);
 780 }
 781
 782 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
 783                                         struct ieee80211_vif *vif,
 784                                         struct ieee80211_bss_conf *bss_conf,
 785                                         u32 changes)
 786 {
 787         /* Need to send a new beacon template to the FW */
 788         if (changes & BSS_CHANGED_BEACON) {
 789                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
 790                         IWL_WARN(mvm, "Failed updating beacon data\n");
 791         }
 792 }
 793
 794 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
 795                                      struct ieee80211_vif *vif,
 796                                      struct ieee80211_bss_conf *bss_conf,
 797                                      u32 changes)
 798 {
 799         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 800
 801         mutex_lock(&mvm->mutex);
 802
 803         switch (vif->type) {
 804         case NL80211_IFTYPE_STATION:
 805                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
 806                 break;
 807         case NL80211_IFTYPE_AP:
 808                 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
 809                 break;
 810         default:
 811                 /* shouldn't happen */
 812                 WARN_ON_ONCE(1);
 813         }
 814
 815         mutex_unlock(&mvm->mutex);
 816 }
 817
 818 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 819                                struct ieee80211_vif *vif,
 820                                struct cfg80211_scan_request *req)
 821 {
 822         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 823         int ret;
 824
 825         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
 826                 return -EINVAL;
 827
 828         mutex_lock(&mvm->mutex);
 829
 830         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
 831                 ret = iwl_mvm_scan_request(mvm, vif, req);
 832         else
 833                 ret = -EBUSY;
 834
 835         mutex_unlock(&mvm->mutex);
 836
 837         return ret;
 838 }
 839
 840 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 841                                        struct ieee80211_vif *vif)
 842 {
 843         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 844
 845         mutex_lock(&mvm->mutex);
 846
 847         iwl_mvm_cancel_scan(mvm);
 848
 849         mutex_unlock(&mvm->mutex);
 850 }
 851
 852 static void
 853 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
 854                                   struct ieee80211_sta *sta, u16 tid,
 855                                   int num_frames,
 856                                   enum ieee80211_frame_release_type reason,
 857                                   bool more_data)
 858 {
 859         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 860         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 861
 862         /* TODO: how do we tell the fw to send frames for a specific TID */
 863
 864         /*
 865          * The fw will send EOSP notification when the last frame will be
 866          * transmitted.
 867          */
 868         iwl_mvm_sta_modify_sleep_tx_count(mvm, mvmsta->sta_id, reason,
 869                                           num_frames);
 870 }
 871
 872 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 873                                    struct ieee80211_vif *vif,
 874                                    enum sta_notify_cmd cmd,
 875                                    struct ieee80211_sta *sta)
 876 {
 877         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 878         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 879
 880         switch (cmd) {
 881         case STA_NOTIFY_SLEEP:
 882                 if (atomic_read(&mvmsta->pending_frames) > 0)
 883                         ieee80211_sta_block_awake(hw, sta, true);
 884                 /*
 885                  * The fw updates the STA to be asleep. Tx packets on the Tx
 886                  * queues to this station will not be transmitted. The fw will
 887                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
 888                  */
 889                 break;
 890         case STA_NOTIFY_AWAKE:
 891                 if (WARN_ON(mvmsta->sta_id == IWL_INVALID_STATION))
 892                         break;
 893                 iwl_mvm_sta_modify_ps_wake(mvm, mvmsta->sta_id);
 894                 break;
 895         default:
 896                 break;
 897         }
 898 }
 899
 900 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 901                                  struct ieee80211_vif *vif,
 902                                  struct ieee80211_sta *sta,
 903                                  enum ieee80211_sta_state old_state,
 904                                  enum ieee80211_sta_state new_state)
 905 {
 906         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 907         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 908         int ret;
 909
 910         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
 911                            sta->addr, old_state, new_state);
 912
 913         /* this would be a mac80211 bug ... but don't crash */
 914         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
 915                 return -EINVAL;
 916
 917         /* if a STA is being removed, reuse its ID */
 918         flush_work(&mvm->sta_drained_wk);
 919
 920         mutex_lock(&mvm->mutex);
 921         if (old_state == IEEE80211_STA_NOTEXIST &&
 922             new_state == IEEE80211_STA_NONE) {
 923                 ret = iwl_mvm_add_sta(mvm, vif, sta);
 924         } else if (old_state == IEEE80211_STA_NONE &&
 925                    new_state == IEEE80211_STA_AUTH) {
 926                 ret = 0;
 927         } else if (old_state == IEEE80211_STA_AUTH &&
 928                    new_state == IEEE80211_STA_ASSOC) {
 929                 iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band);
 930                 ret = 0;
 931         } else if (old_state == IEEE80211_STA_ASSOC &&
 932                    new_state == IEEE80211_STA_AUTHORIZED) {
 933                 ret = 0;
 934         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
 935                    new_state == IEEE80211_STA_ASSOC) {
 936                 ret = 0;
 937         } else if (old_state == IEEE80211_STA_ASSOC &&
 938                    new_state == IEEE80211_STA_AUTH) {
 939                 ret = 0;
 940         } else if (old_state == IEEE80211_STA_AUTH &&
 941                    new_state == IEEE80211_STA_NONE) {
 942                 ret = 0;
 943         } else if (old_state == IEEE80211_STA_NONE &&
 944                    new_state == IEEE80211_STA_NOTEXIST) {
 945                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
 946         } else {
 947                 ret = -EIO;
 948         }
 949         mutex_unlock(&mvm->mutex);
 950
 951         return ret;
 952 }
 953
 954 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 955 {
 956         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 957
 958         mvm->rts_threshold = value;
 959
 960         return 0;
 961 }
 962
 963 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
 964                                struct ieee80211_vif *vif, u16 ac,
 965                                const struct ieee80211_tx_queue_params *params)
 966 {
 967         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 968         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 969
 970         mvmvif->queue_params[ac] = *params;
 971
 972         /*
 973          * No need to update right away, we'll get BSS_CHANGED_QOS
 974          * The exception is P2P_DEVICE interface which needs immediate update.
 975          */
 976         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 977                 int ret;
 978
 979                 mutex_lock(&mvm->mutex);
 980                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 981                 mutex_unlock(&mvm->mutex);
 982                 return ret;
 983         }
 984         return 0;
 985 }
 986
 987 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
 988                                       struct ieee80211_vif *vif)
 989 {
 990         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 991         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
 992                            200 + vif->bss_conf.beacon_int);
 993         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
 994                                100 + vif->bss_conf.beacon_int);
 995
 996         if (WARN_ON_ONCE(vif->bss_conf.assoc))
 997                 return;
 998
 999         mutex_lock(&mvm->mutex);
1000         /* Try really hard to protect the session and hear a beacon */
1001         iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1002         mutex_unlock(&mvm->mutex);
1003 }
1004
1005 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1006                                enum set_key_cmd cmd,
1007                                struct ieee80211_vif *vif,
1008                                struct ieee80211_sta *sta,
1009                                struct ieee80211_key_conf *key)
1010 {
1011         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1012         int ret;
1013
1014         if (iwlwifi_mod_params.sw_crypto) {
1015                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1016                 return -EOPNOTSUPP;
1017         }
1018
1019         switch (key->cipher) {
1020         case WLAN_CIPHER_SUITE_TKIP:
1021                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1022                 /* fall-through */
1023         case WLAN_CIPHER_SUITE_CCMP:
1024                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1025                 break;
1026         case WLAN_CIPHER_SUITE_AES_CMAC:
1027                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1028                 break;
1029         case WLAN_CIPHER_SUITE_WEP40:
1030         case WLAN_CIPHER_SUITE_WEP104:
1031                 /*
1032                  * Support for TX only, at least for now, so accept
1033                  * the key and do nothing else. Then mac80211 will
1034                  * pass it for TX but we don't have to use it for RX.
1035                  */
1036                 return 0;
1037         default:
1038                 return -EOPNOTSUPP;
1039         }
1040
1041         mutex_lock(&mvm->mutex);
1042
1043         switch (cmd) {
1044         case SET_KEY:
1045                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1046                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1047                 if (ret) {
1048                         IWL_WARN(mvm, "set key failed\n");
1049                         /*
1050                          * can't add key for RX, but we don't need it
1051                          * in the device for TX so still return 0
1052                          */
1053                         ret = 0;
1054                 }
1055
1056                 break;
1057         case DISABLE_KEY:
1058                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1059                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1060                 break;
1061         default:
1062                 ret = -EINVAL;
1063         }
1064
1065         mutex_unlock(&mvm->mutex);
1066         return ret;
1067 }
1068
1069 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1070                                         struct ieee80211_vif *vif,
1071                                         struct ieee80211_key_conf *keyconf,
1072                                         struct ieee80211_sta *sta,
1073                                         u32 iv32, u16 *phase1key)
1074 {
1075         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1076
1077         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1078 }
1079
1080
1081 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1082                        struct ieee80211_vif *vif,
1083                        struct ieee80211_channel *channel,
1084                        int duration)
1085 {
1086         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1087         struct cfg80211_chan_def chandef;
1088         int ret;
1089
1090         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1091                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1092                 return -EINVAL;
1093         }
1094
1095         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d)\n", channel->hw_value,
1096                            duration);
1097
1098         mutex_lock(&mvm->mutex);
1099
1100         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1101         ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1102                                        &chandef, 1, 1);
1103
1104         /* Schedule the time events */
1105         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration);
1106
1107         mutex_unlock(&mvm->mutex);
1108         IWL_DEBUG_MAC80211(mvm, "leave\n");
1109
1110         return ret;
1111 }
1112
1113 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1114 {
1115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117         IWL_DEBUG_MAC80211(mvm, "enter\n");
1118
1119         mutex_lock(&mvm->mutex);
1120         iwl_mvm_stop_p2p_roc(mvm);
1121         mutex_unlock(&mvm->mutex);
1122
1123         IWL_DEBUG_MAC80211(mvm, "leave\n");
1124         return 0;
1125 }
1126
1127 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1128                                struct ieee80211_chanctx_conf *ctx)
1129 {
1130         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1131         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1132         int ret;
1133
1134         mutex_lock(&mvm->mutex);
1135
1136         IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1137         ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1138                                    ctx->rx_chains_static,
1139                                    ctx->rx_chains_dynamic);
1140         mutex_unlock(&mvm->mutex);
1141         return ret;
1142 }
1143
1144 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1145                                    struct ieee80211_chanctx_conf *ctx)
1146 {
1147         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1148         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1149
1150         mutex_lock(&mvm->mutex);
1151         iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1152         mutex_unlock(&mvm->mutex);
1153 }
1154
1155 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1156                                    struct ieee80211_chanctx_conf *ctx,
1157                                    u32 changed)
1158 {
1159         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1160         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1161
1162         mutex_lock(&mvm->mutex);
1163         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1164                                  ctx->rx_chains_static,
1165                                  ctx->rx_chains_dynamic);
1166         mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1170                                       struct ieee80211_vif *vif,
1171                                       struct ieee80211_chanctx_conf *ctx)
1172 {
1173         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1174         struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1175         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1176         int ret;
1177
1178         mutex_lock(&mvm->mutex);
1179
1180         mvmvif->phy_ctxt = phyctx;
1181
1182         switch (vif->type) {
1183         case NL80211_IFTYPE_AP:
1184                 /*
1185                  * The AP binding flow is handled as part of the start_ap flow
1186                  * (in bss_info_changed).
1187                  */
1188                 ret = 0;
1189                 goto out_unlock;
1190         case NL80211_IFTYPE_STATION:
1191         case NL80211_IFTYPE_ADHOC:
1192         case NL80211_IFTYPE_MONITOR:
1193                 break;
1194         default:
1195                 ret = -EINVAL;
1196                 goto out_unlock;
1197         }
1198
1199         ret = iwl_mvm_binding_add_vif(mvm, vif);
1200         if (ret)
1201                 goto out_unlock;
1202
1203         /*
1204          * Setting the quota at this stage is only required for monitor
1205          * interfaces. For the other types, the bss_info changed flow
1206          * will handle quota settings.
1207          */
1208         if (vif->type == NL80211_IFTYPE_MONITOR) {
1209                 ret = iwl_mvm_update_quotas(mvm, vif);
1210                 if (ret)
1211                         goto out_remove_binding;
1212         }
1213
1214         goto out_unlock;
1215
1216  out_remove_binding:
1217         iwl_mvm_binding_remove_vif(mvm, vif);
1218  out_unlock:
1219         mutex_unlock(&mvm->mutex);
1220         if (ret)
1221                 mvmvif->phy_ctxt = NULL;
1222         return ret;
1223 }
1224
1225 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1226                                          struct ieee80211_vif *vif,
1227                                          struct ieee80211_chanctx_conf *ctx)
1228 {
1229         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1231
1232         mutex_lock(&mvm->mutex);
1233
1234         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1235
1236         if (vif->type == NL80211_IFTYPE_AP)
1237                 goto out_unlock;
1238
1239         iwl_mvm_binding_remove_vif(mvm, vif);
1240         switch (vif->type) {
1241         case NL80211_IFTYPE_MONITOR:
1242                 iwl_mvm_update_quotas(mvm, vif);
1243                 break;
1244         default:
1245                 break;
1246         }
1247
1248 out_unlock:
1249         mvmvif->phy_ctxt = NULL;
1250         mutex_unlock(&mvm->mutex);
1251 }
1252
1253 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1254                            struct ieee80211_sta *sta,
1255                            bool set)
1256 {
1257         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1258         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1259
1260         if (!mvm_sta || !mvm_sta->vif) {
1261                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1262                 return -EINVAL;
1263         }
1264
1265         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1266 }
1267
1268 struct ieee80211_ops iwl_mvm_hw_ops = {
1269         .tx = iwl_mvm_mac_tx,
1270         .ampdu_action = iwl_mvm_mac_ampdu_action,
1271         .start = iwl_mvm_mac_start,
1272         .restart_complete = iwl_mvm_mac_restart_complete,
1273         .stop = iwl_mvm_mac_stop,
1274         .add_interface = iwl_mvm_mac_add_interface,
1275         .remove_interface = iwl_mvm_mac_remove_interface,
1276         .config = iwl_mvm_mac_config,
1277         .configure_filter = iwl_mvm_configure_filter,
1278         .bss_info_changed = iwl_mvm_bss_info_changed,
1279         .hw_scan = iwl_mvm_mac_hw_scan,
1280         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1281         .sta_state = iwl_mvm_mac_sta_state,
1282         .sta_notify = iwl_mvm_mac_sta_notify,
1283         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1284         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1285         .conf_tx = iwl_mvm_mac_conf_tx,
1286         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1287         .set_key = iwl_mvm_mac_set_key,
1288         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1289         .remain_on_channel = iwl_mvm_roc,
1290         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1291
1292         .add_chanctx = iwl_mvm_add_chanctx,
1293         .remove_chanctx = iwl_mvm_remove_chanctx,
1294         .change_chanctx = iwl_mvm_change_chanctx,
1295         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1296         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1297
1298         .start_ap = iwl_mvm_start_ap,
1299         .stop_ap = iwl_mvm_stop_ap,
1300
1301         .set_tim = iwl_mvm_set_tim,
1302
1303 #ifdef CONFIG_PM_SLEEP
1304         /* look at d3.c */
1305         .suspend = iwl_mvm_suspend,
1306         .resume = iwl_mvm_resume,
1307         .set_wakeup = iwl_mvm_set_wakeup,
1308         .set_rekey_data = iwl_mvm_set_rekey_data,
1309 #if IS_ENABLED(CONFIG_IPV6)
1310         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1311 #endif
1312         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1313 #endif
1314 };