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_SUPPORTS_PS |
 117                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 118                     IEEE80211_HW_AMPDU_AGGREGATION |
 119                     IEEE80211_HW_TIMING_BEACON_ONLY;
 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_prepare_mac_removal(struct iwl_mvm *mvm,
 561                                         struct ieee80211_vif *vif)
 562 {
 563         u32 tfd_msk = 0, ac;
 564
 565         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 566                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 567                         tfd_msk |= BIT(vif->hw_queue[ac]);
 568
 569         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 570                 tfd_msk |= BIT(vif->cab_queue);
 571
 572         if (tfd_msk) {
 573                 mutex_lock(&mvm->mutex);
 574                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 575                 mutex_unlock(&mvm->mutex);
 576         }
 577
 578         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 579                 /*
 580                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 581                  * We assume here that all the packets sent to the OFFCHANNEL
 582                  * queue are sent in ROC session.
 583                  */
 584                 flush_work(&mvm->roc_done_wk);
 585         } else {
 586                 /*
 587                  * By now, all the AC queues are empty. The AGG queues are
 588                  * empty too. We already got all the Tx responses for all the
 589                  * packets in the queues. The drain work can have been
 590                  * triggered. Flush it. This work item takes the mutex, so kill
 591                  * it before we take it.
 592                  */
 593                 flush_work(&mvm->sta_drained_wk);
 594         }
 595 }
 596
 597 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 598                                          struct ieee80211_vif *vif)
 599 {
 600         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 601         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 602
 603         iwl_mvm_prepare_mac_removal(mvm, vif);
 604
 605         mutex_lock(&mvm->mutex);
 606
 607         /*
 608          * For AP/GO interface, the tear down of the resources allocated to the
 609          * interface is be handled as part of the stop_ap flow.
 610          */
 611         if (vif->type == NL80211_IFTYPE_AP) {
 612                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 613                 goto out_release;
 614         }
 615
 616         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 617                 mvm->p2p_device_vif = NULL;
 618                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 619                 iwl_mvm_binding_remove_vif(mvm, vif);
 620                 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 621                 mvmvif->phy_ctxt = NULL;
 622         }
 623
 624         /*
 625          * TODO: remove this temporary code.
 626          * Currently MVM FW supports power management only on single MAC.
 627          * Check if only one additional interface remains after removing
 628          * current one. Update power mode on the remaining interface.
 629          */
 630         if (mvm->vif_count)
 631                 mvm->vif_count--;
 632         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 633                            mvm->vif_count);
 634         if (mvm->vif_count == 1) {
 635                 ieee80211_iterate_active_interfaces(
 636                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 637                                         iwl_mvm_power_update_iterator, mvm);
 638         }
 639
 640         iwl_mvm_mac_ctxt_remove(mvm, vif);
 641
 642 out_release:
 643         iwl_mvm_mac_ctxt_release(mvm, vif);
 644         mutex_unlock(&mvm->mutex);
 645 }
 646
 647 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 648 {
 649         return 0;
 650 }
 651
 652 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 653                                      unsigned int changed_flags,
 654                                      unsigned int *total_flags,
 655                                      u64 multicast)
 656 {
 657         *total_flags = 0;
 658 }
 659
 660 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 661                                              struct ieee80211_vif *vif,
 662                                              struct ieee80211_bss_conf *bss_conf,
 663                                              u32 changes)
 664 {
 665         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 666         int ret;
 667
 668         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 669         if (ret)
 670                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 671
 672         if (changes & BSS_CHANGED_ASSOC) {
 673                 if (bss_conf->assoc) {
 674                         /* add quota for this interface */
 675                         ret = iwl_mvm_update_quotas(mvm, vif);
 676                         if (ret) {
 677                                 IWL_ERR(mvm, "failed to update quotas\n");
 678                                 return;
 679                         }
 680                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 681                         /* remove AP station now that the MAC is unassoc */
 682                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 683                         if (ret)
 684                                 IWL_ERR(mvm, "failed to remove AP station\n");
 685                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 686                         /* remove quota for this interface */
 687                         ret = iwl_mvm_update_quotas(mvm, NULL);
 688                         if (ret)
 689                                 IWL_ERR(mvm, "failed to update quotas\n");
 690                 }
 691         } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 692                 /*
 693                  * We received a beacon _after_ association so
 694                  * remove the session protection.
 695                  */
 696                 iwl_mvm_remove_time_event(mvm, mvmvif,
 697                                           &mvmvif->time_event_data);
 698         } else if (changes & BSS_CHANGED_PS) {
 699                 /*
 700                  * TODO: remove this temporary code.
 701                  * Currently MVM FW supports power management only on single
 702                  * MAC. Avoid power mode update if more than one interface
 703                  * is active.
 704                  */
 705                 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 706                                    mvm->vif_count);
 707                 if (mvm->vif_count == 1) {
 708                         ret = iwl_mvm_power_update_mode(mvm, vif);
 709                         if (ret)
 710                                 IWL_ERR(mvm, "failed to update power mode\n");
 711                 }
 712         }
 713 }
 714
 715 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 716 {
 717         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 718         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 719         int ret;
 720
 721         mutex_lock(&mvm->mutex);
 722
 723         /* Send the beacon template */
 724         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 725         if (ret)
 726                 goto out_unlock;
 727
 728         /* Add the mac context */
 729         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 730         if (ret)
 731                 goto out_unlock;
 732
 733         /* Perform the binding */
 734         ret = iwl_mvm_binding_add_vif(mvm, vif);
 735         if (ret)
 736                 goto out_remove;
 737
 738         mvmvif->ap_active = true;
 739
 740         /* Send the bcast station. At this stage the TBTT and DTIM time events
 741          * are added and applied to the scheduler */
 742         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 743         if (ret)
 744                 goto out_unbind;
 745
 746         ret = iwl_mvm_update_quotas(mvm, vif);
 747         if (ret)
 748                 goto out_rm_bcast;
 749
 750         /* Need to update the P2P Device MAC */
 751         if (vif->p2p && mvm->p2p_device_vif)
 752                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 753
 754         mutex_unlock(&mvm->mutex);
 755         return 0;
 756
 757 out_rm_bcast:
 758         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 759 out_unbind:
 760         iwl_mvm_binding_remove_vif(mvm, vif);
 761 out_remove:
 762         iwl_mvm_mac_ctxt_remove(mvm, vif);
 763 out_unlock:
 764         mutex_unlock(&mvm->mutex);
 765         return ret;
 766 }
 767
 768 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 769 {
 770         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 771         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 772
 773         iwl_mvm_prepare_mac_removal(mvm, vif);
 774
 775         mutex_lock(&mvm->mutex);
 776
 777         mvmvif->ap_active = false;
 778
 779         /* Need to update the P2P Device MAC */
 780         if (vif->p2p && mvm->p2p_device_vif)
 781                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 782
 783         iwl_mvm_update_quotas(mvm, NULL);
 784         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 785         iwl_mvm_binding_remove_vif(mvm, vif);
 786         iwl_mvm_mac_ctxt_remove(mvm, vif);
 787
 788         mutex_unlock(&mvm->mutex);
 789 }
 790
 791 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
 792                                         struct ieee80211_vif *vif,
 793                                         struct ieee80211_bss_conf *bss_conf,
 794                                         u32 changes)
 795 {
 796         /* Need to send a new beacon template to the FW */
 797         if (changes & BSS_CHANGED_BEACON) {
 798                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
 799                         IWL_WARN(mvm, "Failed updating beacon data\n");
 800         }
 801 }
 802
 803 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
 804                                      struct ieee80211_vif *vif,
 805                                      struct ieee80211_bss_conf *bss_conf,
 806                                      u32 changes)
 807 {
 808         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 809
 810         mutex_lock(&mvm->mutex);
 811
 812         switch (vif->type) {
 813         case NL80211_IFTYPE_STATION:
 814                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
 815                 break;
 816         case NL80211_IFTYPE_AP:
 817                 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
 818                 break;
 819         default:
 820                 /* shouldn't happen */
 821                 WARN_ON_ONCE(1);
 822         }
 823
 824         mutex_unlock(&mvm->mutex);
 825 }
 826
 827 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 828                                struct ieee80211_vif *vif,
 829                                struct cfg80211_scan_request *req)
 830 {
 831         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 832         int ret;
 833
 834         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
 835                 return -EINVAL;
 836
 837         mutex_lock(&mvm->mutex);
 838
 839         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
 840                 ret = iwl_mvm_scan_request(mvm, vif, req);
 841         else
 842                 ret = -EBUSY;
 843
 844         mutex_unlock(&mvm->mutex);
 845
 846         return ret;
 847 }
 848
 849 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 850                                        struct ieee80211_vif *vif)
 851 {
 852         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 853
 854         mutex_lock(&mvm->mutex);
 855
 856         iwl_mvm_cancel_scan(mvm);
 857
 858         mutex_unlock(&mvm->mutex);
 859 }
 860
 861 static void
 862 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
 863                                   struct ieee80211_sta *sta, u16 tid,
 864                                   int num_frames,
 865                                   enum ieee80211_frame_release_type reason,
 866                                   bool more_data)
 867 {
 868         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 869
 870         /* TODO: how do we tell the fw to send frames for a specific TID */
 871
 872         /*
 873          * The fw will send EOSP notification when the last frame will be
 874          * transmitted.
 875          */
 876         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
 877 }
 878
 879 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 880                                    struct ieee80211_vif *vif,
 881                                    enum sta_notify_cmd cmd,
 882                                    struct ieee80211_sta *sta)
 883 {
 884         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 885         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 886
 887         switch (cmd) {
 888         case STA_NOTIFY_SLEEP:
 889                 if (atomic_read(&mvmsta->pending_frames) > 0)
 890                         ieee80211_sta_block_awake(hw, sta, true);
 891                 /*
 892                  * The fw updates the STA to be asleep. Tx packets on the Tx
 893                  * queues to this station will not be transmitted. The fw will
 894                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
 895                  */
 896                 break;
 897         case STA_NOTIFY_AWAKE:
 898                 if (WARN_ON(mvmsta->sta_id == IWL_INVALID_STATION))
 899                         break;
 900                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
 901                 break;
 902         default:
 903                 break;
 904         }
 905 }
 906
 907 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 908                                  struct ieee80211_vif *vif,
 909                                  struct ieee80211_sta *sta,
 910                                  enum ieee80211_sta_state old_state,
 911                                  enum ieee80211_sta_state new_state)
 912 {
 913         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 914         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 915         int ret;
 916
 917         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
 918                            sta->addr, old_state, new_state);
 919
 920         /* this would be a mac80211 bug ... but don't crash */
 921         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
 922                 return -EINVAL;
 923
 924         /* if a STA is being removed, reuse its ID */
 925         flush_work(&mvm->sta_drained_wk);
 926
 927         mutex_lock(&mvm->mutex);
 928         if (old_state == IEEE80211_STA_NOTEXIST &&
 929             new_state == IEEE80211_STA_NONE) {
 930                 ret = iwl_mvm_add_sta(mvm, vif, sta);
 931         } else if (old_state == IEEE80211_STA_NONE &&
 932                    new_state == IEEE80211_STA_AUTH) {
 933                 ret = 0;
 934         } else if (old_state == IEEE80211_STA_AUTH &&
 935                    new_state == IEEE80211_STA_ASSOC) {
 936                 ret = iwl_mvm_update_sta(mvm, vif, sta);
 937                 if (ret == 0)
 938                         iwl_mvm_rs_rate_init(mvm, sta,
 939                                              mvmvif->phy_ctxt->channel->band);
 940         } else if (old_state == IEEE80211_STA_ASSOC &&
 941                    new_state == IEEE80211_STA_AUTHORIZED) {
 942                 ret = 0;
 943         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
 944                    new_state == IEEE80211_STA_ASSOC) {
 945                 ret = 0;
 946         } else if (old_state == IEEE80211_STA_ASSOC &&
 947                    new_state == IEEE80211_STA_AUTH) {
 948                 ret = 0;
 949         } else if (old_state == IEEE80211_STA_AUTH &&
 950                    new_state == IEEE80211_STA_NONE) {
 951                 ret = 0;
 952         } else if (old_state == IEEE80211_STA_NONE &&
 953                    new_state == IEEE80211_STA_NOTEXIST) {
 954                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
 955         } else {
 956                 ret = -EIO;
 957         }
 958         mutex_unlock(&mvm->mutex);
 959
 960         return ret;
 961 }
 962
 963 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 964 {
 965         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 966
 967         mvm->rts_threshold = value;
 968
 969         return 0;
 970 }
 971
 972 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
 973                                struct ieee80211_vif *vif, u16 ac,
 974                                const struct ieee80211_tx_queue_params *params)
 975 {
 976         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 977         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 978
 979         mvmvif->queue_params[ac] = *params;
 980
 981         /*
 982          * No need to update right away, we'll get BSS_CHANGED_QOS
 983          * The exception is P2P_DEVICE interface which needs immediate update.
 984          */
 985         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 986                 int ret;
 987
 988                 mutex_lock(&mvm->mutex);
 989                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 990                 mutex_unlock(&mvm->mutex);
 991                 return ret;
 992         }
 993         return 0;
 994 }
 995
 996 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
 997                                       struct ieee80211_vif *vif)
 998 {
 999         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1000         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1001                            200 + vif->bss_conf.beacon_int);
1002         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1003                                100 + vif->bss_conf.beacon_int);
1004
1005         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1006                 return;
1007
1008         mutex_lock(&mvm->mutex);
1009         /* Try really hard to protect the session and hear a beacon */
1010         iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1011         mutex_unlock(&mvm->mutex);
1012 }
1013
1014 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1015                                enum set_key_cmd cmd,
1016                                struct ieee80211_vif *vif,
1017                                struct ieee80211_sta *sta,
1018                                struct ieee80211_key_conf *key)
1019 {
1020         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1021         int ret;
1022
1023         if (iwlwifi_mod_params.sw_crypto) {
1024                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1025                 return -EOPNOTSUPP;
1026         }
1027
1028         switch (key->cipher) {
1029         case WLAN_CIPHER_SUITE_TKIP:
1030                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1031                 /* fall-through */
1032         case WLAN_CIPHER_SUITE_CCMP:
1033                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1034                 break;
1035         case WLAN_CIPHER_SUITE_AES_CMAC:
1036                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1037                 break;
1038         case WLAN_CIPHER_SUITE_WEP40:
1039         case WLAN_CIPHER_SUITE_WEP104:
1040                 /*
1041                  * Support for TX only, at least for now, so accept
1042                  * the key and do nothing else. Then mac80211 will
1043                  * pass it for TX but we don't have to use it for RX.
1044                  */
1045                 return 0;
1046         default:
1047                 return -EOPNOTSUPP;
1048         }
1049
1050         mutex_lock(&mvm->mutex);
1051
1052         switch (cmd) {
1053         case SET_KEY:
1054                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1055                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1056                 if (ret) {
1057                         IWL_WARN(mvm, "set key failed\n");
1058                         /*
1059                          * can't add key for RX, but we don't need it
1060                          * in the device for TX so still return 0
1061                          */
1062                         ret = 0;
1063                 }
1064
1065                 break;
1066         case DISABLE_KEY:
1067                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1068                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1069                 break;
1070         default:
1071                 ret = -EINVAL;
1072         }
1073
1074         mutex_unlock(&mvm->mutex);
1075         return ret;
1076 }
1077
1078 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1079                                         struct ieee80211_vif *vif,
1080                                         struct ieee80211_key_conf *keyconf,
1081                                         struct ieee80211_sta *sta,
1082                                         u32 iv32, u16 *phase1key)
1083 {
1084         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1085
1086         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1087 }
1088
1089
1090 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1091                        struct ieee80211_vif *vif,
1092                        struct ieee80211_channel *channel,
1093                        int duration)
1094 {
1095         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1096         struct cfg80211_chan_def chandef;
1097         int ret;
1098
1099         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1100                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1101                 return -EINVAL;
1102         }
1103
1104         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d)\n", channel->hw_value,
1105                            duration);
1106
1107         mutex_lock(&mvm->mutex);
1108
1109         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1110         ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1111                                        &chandef, 1, 1);
1112
1113         /* Schedule the time events */
1114         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration);
1115
1116         mutex_unlock(&mvm->mutex);
1117         IWL_DEBUG_MAC80211(mvm, "leave\n");
1118
1119         return ret;
1120 }
1121
1122 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1123 {
1124         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1125
1126         IWL_DEBUG_MAC80211(mvm, "enter\n");
1127
1128         mutex_lock(&mvm->mutex);
1129         iwl_mvm_stop_p2p_roc(mvm);
1130         mutex_unlock(&mvm->mutex);
1131
1132         IWL_DEBUG_MAC80211(mvm, "leave\n");
1133         return 0;
1134 }
1135
1136 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1137                                struct ieee80211_chanctx_conf *ctx)
1138 {
1139         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1140         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1141         int ret;
1142
1143         mutex_lock(&mvm->mutex);
1144
1145         IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1146         ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1147                                    ctx->rx_chains_static,
1148                                    ctx->rx_chains_dynamic);
1149         mutex_unlock(&mvm->mutex);
1150         return ret;
1151 }
1152
1153 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1154                                    struct ieee80211_chanctx_conf *ctx)
1155 {
1156         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1157         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1158
1159         mutex_lock(&mvm->mutex);
1160         iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1161         mutex_unlock(&mvm->mutex);
1162 }
1163
1164 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1165                                    struct ieee80211_chanctx_conf *ctx,
1166                                    u32 changed)
1167 {
1168         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1169         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1170
1171         mutex_lock(&mvm->mutex);
1172         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1173                                  ctx->rx_chains_static,
1174                                  ctx->rx_chains_dynamic);
1175         mutex_unlock(&mvm->mutex);
1176 }
1177
1178 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1179                                       struct ieee80211_vif *vif,
1180                                       struct ieee80211_chanctx_conf *ctx)
1181 {
1182         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1183         struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1184         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1185         int ret;
1186
1187         mutex_lock(&mvm->mutex);
1188
1189         mvmvif->phy_ctxt = phyctx;
1190
1191         switch (vif->type) {
1192         case NL80211_IFTYPE_AP:
1193                 /*
1194                  * The AP binding flow is handled as part of the start_ap flow
1195                  * (in bss_info_changed).
1196                  */
1197                 ret = 0;
1198                 goto out_unlock;
1199         case NL80211_IFTYPE_STATION:
1200         case NL80211_IFTYPE_ADHOC:
1201         case NL80211_IFTYPE_MONITOR:
1202                 break;
1203         default:
1204                 ret = -EINVAL;
1205                 goto out_unlock;
1206         }
1207
1208         ret = iwl_mvm_binding_add_vif(mvm, vif);
1209         if (ret)
1210                 goto out_unlock;
1211
1212         /*
1213          * Setting the quota at this stage is only required for monitor
1214          * interfaces. For the other types, the bss_info changed flow
1215          * will handle quota settings.
1216          */
1217         if (vif->type == NL80211_IFTYPE_MONITOR) {
1218                 ret = iwl_mvm_update_quotas(mvm, vif);
1219                 if (ret)
1220                         goto out_remove_binding;
1221         }
1222
1223         goto out_unlock;
1224
1225  out_remove_binding:
1226         iwl_mvm_binding_remove_vif(mvm, vif);
1227  out_unlock:
1228         mutex_unlock(&mvm->mutex);
1229         if (ret)
1230                 mvmvif->phy_ctxt = NULL;
1231         return ret;
1232 }
1233
1234 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1235                                          struct ieee80211_vif *vif,
1236                                          struct ieee80211_chanctx_conf *ctx)
1237 {
1238         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1239         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1240
1241         mutex_lock(&mvm->mutex);
1242
1243         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1244
1245         if (vif->type == NL80211_IFTYPE_AP)
1246                 goto out_unlock;
1247
1248         iwl_mvm_binding_remove_vif(mvm, vif);
1249         switch (vif->type) {
1250         case NL80211_IFTYPE_MONITOR:
1251                 iwl_mvm_update_quotas(mvm, vif);
1252                 break;
1253         default:
1254                 break;
1255         }
1256
1257 out_unlock:
1258         mvmvif->phy_ctxt = NULL;
1259         mutex_unlock(&mvm->mutex);
1260 }
1261
1262 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1263                            struct ieee80211_sta *sta,
1264                            bool set)
1265 {
1266         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1267         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1268
1269         if (!mvm_sta || !mvm_sta->vif) {
1270                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1271                 return -EINVAL;
1272         }
1273
1274         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1275 }
1276
1277 struct ieee80211_ops iwl_mvm_hw_ops = {
1278         .tx = iwl_mvm_mac_tx,
1279         .ampdu_action = iwl_mvm_mac_ampdu_action,
1280         .start = iwl_mvm_mac_start,
1281         .restart_complete = iwl_mvm_mac_restart_complete,
1282         .stop = iwl_mvm_mac_stop,
1283         .add_interface = iwl_mvm_mac_add_interface,
1284         .remove_interface = iwl_mvm_mac_remove_interface,
1285         .config = iwl_mvm_mac_config,
1286         .configure_filter = iwl_mvm_configure_filter,
1287         .bss_info_changed = iwl_mvm_bss_info_changed,
1288         .hw_scan = iwl_mvm_mac_hw_scan,
1289         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1290         .sta_state = iwl_mvm_mac_sta_state,
1291         .sta_notify = iwl_mvm_mac_sta_notify,
1292         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1293         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1294         .conf_tx = iwl_mvm_mac_conf_tx,
1295         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1296         .set_key = iwl_mvm_mac_set_key,
1297         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1298         .remain_on_channel = iwl_mvm_roc,
1299         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1300
1301         .add_chanctx = iwl_mvm_add_chanctx,
1302         .remove_chanctx = iwl_mvm_remove_chanctx,
1303         .change_chanctx = iwl_mvm_change_chanctx,
1304         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1305         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1306
1307         .start_ap = iwl_mvm_start_ap,
1308         .stop_ap = iwl_mvm_stop_ap,
1309
1310         .set_tim = iwl_mvm_set_tim,
1311
1312 #ifdef CONFIG_PM_SLEEP
1313         /* look at d3.c */
1314         .suspend = iwl_mvm_suspend,
1315         .resume = iwl_mvm_resume,
1316         .set_wakeup = iwl_mvm_set_wakeup,
1317         .set_rekey_data = iwl_mvm_set_rekey_data,
1318 #if IS_ENABLED(CONFIG_IPV6)
1319         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1320 #endif
1321         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1322 #endif
1323 };