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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
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  22  * USA
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  25  * in the file called COPYING.
  26  *
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
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  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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  37  * modification, are permitted provided that the following conditions
  38  * are met:
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  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <net/mac80211.h>
  70 #include <net/tcp.h>
  71
  72 #include "iwl-op-mode.h"
  73 #include "iwl-io.h"
  74 #include "mvm.h"
  75 #include "sta.h"
  76 #include "time-event.h"
  77 #include "iwl-eeprom-parse.h"
  78 #include "fw-api-scan.h"
  79 #include "iwl-phy-db.h"
  80
  81 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  82         {
  83                 .max = 1,
  84                 .types = BIT(NL80211_IFTYPE_STATION) |
  85                         BIT(NL80211_IFTYPE_AP),
  86         },
  87         {
  88                 .max = 1,
  89                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT) |
  90                         BIT(NL80211_IFTYPE_P2P_GO),
  91         },
  92         {
  93                 .max = 1,
  94                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  95         },
  96 };
  97
  98 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
  99         {
 100                 .num_different_channels = 1,
 101                 .max_interfaces = 3,
 102                 .limits = iwl_mvm_limits,
 103                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 104         },
 105 };
 106
 107 #ifdef CONFIG_PM_SLEEP
 108 static const struct nl80211_wowlan_tcp_data_token_feature
 109 iwl_mvm_wowlan_tcp_token_feature = {
 110         .min_len = 0,
 111         .max_len = 255,
 112         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 113 };
 114
 115 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 116         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 117         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 118                             sizeof(struct ethhdr) -
 119                             sizeof(struct iphdr) -
 120                             sizeof(struct tcphdr),
 121         .data_interval_max = 65535, /* __le16 in API */
 122         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 123                             sizeof(struct ethhdr) -
 124                             sizeof(struct iphdr) -
 125                             sizeof(struct tcphdr),
 126         .seq = true,
 127 };
 128 #endif
 129
 130 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 131 {
 132         struct ieee80211_hw *hw = mvm->hw;
 133         int num_mac, ret, i;
 134
 135         /* Tell mac80211 our characteristics */
 136         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 137                     IEEE80211_HW_SPECTRUM_MGMT |
 138                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 139                     IEEE80211_HW_QUEUE_CONTROL |
 140                     IEEE80211_HW_WANT_MONITOR_VIF |
 141                     IEEE80211_HW_SUPPORTS_PS |
 142                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 143                     IEEE80211_HW_AMPDU_AGGREGATION |
 144                     IEEE80211_HW_TIMING_BEACON_ONLY;
 145
 146         hw->queues = IWL_FIRST_AMPDU_QUEUE;
 147         hw->offchannel_tx_hw_queue = IWL_OFFCHANNEL_QUEUE;
 148         hw->rate_control_algorithm = "iwl-mvm-rs";
 149
 150         /*
 151          * Enable 11w if advertised by firmware and software crypto
 152          * is not enabled (as the firmware will interpret some mgmt
 153          * packets, so enabling it with software crypto isn't safe)
 154          */
 155         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 156             !iwlwifi_mod_params.sw_crypto)
 157                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 158
 159         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 160         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 161         hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
 162
 163         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 164                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 165                 BIT(NL80211_IFTYPE_AP) |
 166                 BIT(NL80211_IFTYPE_P2P_GO) |
 167                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 168
 169         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 170                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
 171                             WIPHY_FLAG_IBSS_RSN;
 172
 173         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 174         hw->wiphy->n_iface_combinations =
 175                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 176
 177         hw->wiphy->max_remain_on_channel_duration = 500;
 178         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 179
 180         /* Extract MAC address */
 181         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 182         hw->wiphy->addresses = mvm->addresses;
 183         hw->wiphy->n_addresses = 1;
 184
 185         /* Extract additional MAC addresses if available */
 186         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 187                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 188
 189         for (i = 1; i < num_mac; i++) {
 190                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 191                        ETH_ALEN);
 192                 mvm->addresses[i].addr[5]++;
 193                 hw->wiphy->n_addresses++;
 194         }
 195
 196         /* we create the 802.11 header and a max-length SSID element */
 197         hw->wiphy->max_scan_ie_len =
 198                 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 199         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 200
 201         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 202                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 203                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 204         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 205                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 206                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 207
 208         hw->wiphy->hw_version = mvm->trans->hw_id;
 209
 210         if (iwlwifi_mod_params.power_save)
 211                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 212         else
 213                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 214
 215         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 216                                NL80211_FEATURE_P2P_GO_OPPPS;
 217
 218         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 219
 220 #ifdef CONFIG_PM_SLEEP
 221         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 222             mvm->trans->ops->d3_suspend &&
 223             mvm->trans->ops->d3_resume &&
 224             device_can_wakeup(mvm->trans->dev)) {
 225                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 226                                           WIPHY_WOWLAN_DISCONNECT |
 227                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 228                                           WIPHY_WOWLAN_RFKILL_RELEASE;
 229                 if (!iwlwifi_mod_params.sw_crypto)
 230                         hw->wiphy->wowlan.flags |=
 231                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 232                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 233                                 WIPHY_WOWLAN_4WAY_HANDSHAKE;
 234
 235                 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 236                 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 237                 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 238                 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 239         }
 240 #endif
 241
 242         ret = iwl_mvm_leds_init(mvm);
 243         if (ret)
 244                 return ret;
 245
 246         return ieee80211_register_hw(mvm->hw);
 247 }
 248
 249 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 250                            struct ieee80211_tx_control *control,
 251                            struct sk_buff *skb)
 252 {
 253         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 254
 255         if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
 256                 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
 257                 goto drop;
 258         }
 259
 260         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_OFFCHANNEL_QUEUE &&
 261             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 262                 goto drop;
 263
 264         if (control->sta) {
 265                 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
 266                         goto drop;
 267                 return;
 268         }
 269
 270         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 271                 goto drop;
 272         return;
 273  drop:
 274         ieee80211_free_txskb(hw, skb);
 275 }
 276
 277 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 278                                     struct ieee80211_vif *vif,
 279                                     enum ieee80211_ampdu_mlme_action action,
 280                                     struct ieee80211_sta *sta, u16 tid,
 281                                     u16 *ssn, u8 buf_size)
 282 {
 283         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 284         int ret;
 285
 286         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 287                      sta->addr, tid, action);
 288
 289         if (!(mvm->nvm_data->sku_cap_11n_enable))
 290                 return -EACCES;
 291
 292         mutex_lock(&mvm->mutex);
 293
 294         switch (action) {
 295         case IEEE80211_AMPDU_RX_START:
 296                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
 297                         ret = -EINVAL;
 298                         break;
 299                 }
 300                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 301                 break;
 302         case IEEE80211_AMPDU_RX_STOP:
 303                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 304                 break;
 305         case IEEE80211_AMPDU_TX_START:
 306                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
 307                         ret = -EINVAL;
 308                         break;
 309                 }
 310                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 311                 break;
 312         case IEEE80211_AMPDU_TX_STOP_CONT:
 313                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 314                 break;
 315         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 316         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 317                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 318                 break;
 319         case IEEE80211_AMPDU_TX_OPERATIONAL:
 320                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 321                 break;
 322         default:
 323                 WARN_ON_ONCE(1);
 324                 ret = -EINVAL;
 325                 break;
 326         }
 327         mutex_unlock(&mvm->mutex);
 328
 329         return ret;
 330 }
 331
 332 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 333                                      struct ieee80211_vif *vif)
 334 {
 335         struct iwl_mvm *mvm = data;
 336         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 337
 338         mvmvif->uploaded = false;
 339         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 340
 341         /* does this make sense at all? */
 342         mvmvif->color++;
 343
 344         spin_lock_bh(&mvm->time_event_lock);
 345         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 346         spin_unlock_bh(&mvm->time_event_lock);
 347
 348         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 349                 mvmvif->phy_ctxt = NULL;
 350 }
 351
 352 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 353 {
 354         iwl_trans_stop_device(mvm->trans);
 355         iwl_trans_stop_hw(mvm->trans, false);
 356
 357         mvm->scan_status = IWL_MVM_SCAN_NONE;
 358
 359         /* just in case one was running */
 360         ieee80211_remain_on_channel_expired(mvm->hw);
 361
 362         ieee80211_iterate_active_interfaces_atomic(
 363                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 364                 iwl_mvm_cleanup_iterator, mvm);
 365
 366         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 367         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 368
 369         ieee80211_wake_queues(mvm->hw);
 370
 371         mvm->vif_count = 0;
 372 }
 373
 374 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 375 {
 376         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 377         int ret;
 378
 379         mutex_lock(&mvm->mutex);
 380
 381         /* Clean up some internal and mac80211 state on restart */
 382         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 383                 iwl_mvm_restart_cleanup(mvm);
 384
 385         ret = iwl_mvm_up(mvm);
 386         mutex_unlock(&mvm->mutex);
 387
 388         return ret;
 389 }
 390
 391 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 392 {
 393         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 394         int ret;
 395
 396         mutex_lock(&mvm->mutex);
 397
 398         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 399         ret = iwl_mvm_update_quotas(mvm, NULL);
 400         if (ret)
 401                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 402                         ret);
 403
 404         mutex_unlock(&mvm->mutex);
 405 }
 406
 407 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 408 {
 409         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 410
 411         flush_work(&mvm->async_handlers_wk);
 412
 413         mutex_lock(&mvm->mutex);
 414         /* async_handlers_wk is now blocked */
 415
 416         /*
 417          * The work item could be running or queued if the
 418          * ROC time event stops just as we get here.
 419          */
 420         cancel_work_sync(&mvm->roc_done_wk);
 421
 422         iwl_trans_stop_device(mvm->trans);
 423         iwl_trans_stop_hw(mvm->trans, false);
 424
 425         iwl_mvm_async_handlers_purge(mvm);
 426         /* async_handlers_list is empty and will stay empty: HW is stopped */
 427
 428         /* the fw is stopped, the aux sta is dead: clean up driver state */
 429         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 430
 431         mutex_unlock(&mvm->mutex);
 432
 433         /*
 434          * The worker might have been waiting for the mutex, let it run and
 435          * discover that its list is now empty.
 436          */
 437         cancel_work_sync(&mvm->async_handlers_wk);
 438 }
 439
 440 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
 441                                         struct ieee80211_vif *vif)
 442 {
 443         struct iwl_mvm *mvm = data;
 444         int ret;
 445
 446         ret = iwl_mvm_power_disable(mvm, vif);
 447         if (ret)
 448                 IWL_ERR(mvm, "failed to disable power management\n");
 449 }
 450
 451 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 452                                           struct ieee80211_vif *vif)
 453 {
 454         struct iwl_mvm *mvm = data;
 455
 456         iwl_mvm_power_update_mode(mvm, vif);
 457 }
 458
 459 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 460                                      struct ieee80211_vif *vif)
 461 {
 462         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 463         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 464         int ret;
 465
 466         /*
 467          * Not much to do here. The stack will not allow interface
 468          * types or combinations that we didn't advertise, so we
 469          * don't really have to check the types.
 470          */
 471
 472         mutex_lock(&mvm->mutex);
 473
 474         /* Allocate resources for the MAC context, and add it the the fw  */
 475         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 476         if (ret)
 477                 goto out_unlock;
 478
 479         /*
 480          * The AP binding flow can be done only after the beacon
 481          * template is configured (which happens only in the mac80211
 482          * start_ap() flow), and adding the broadcast station can happen
 483          * only after the binding.
 484          * In addition, since modifying the MAC before adding a bcast
 485          * station is not allowed by the FW, delay the adding of MAC context to
 486          * the point where we can also add the bcast station.
 487          * In short: there's not much we can do at this point, other than
 488          * allocating resources :)
 489          */
 490         if (vif->type == NL80211_IFTYPE_AP) {
 491                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 492                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 493                                                qmask);
 494                 if (ret) {
 495                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 496                         goto out_release;
 497                 }
 498
 499                 goto out_unlock;
 500         }
 501
 502         /*
 503          * TODO: remove this temporary code.
 504          * Currently MVM FW supports power management only on single MAC.
 505          * Iterate and disable PM on all active interfaces.
 506          * Note: the method below does not count the new interface being added
 507          * at this moment.
 508          */
 509         mvm->vif_count++;
 510         if (mvm->vif_count > 1) {
 511                 IWL_DEBUG_MAC80211(mvm,
 512                                    "Disable power on existing interfaces\n");
 513                 ieee80211_iterate_active_interfaces_atomic(
 514                                             mvm->hw,
 515                                             IEEE80211_IFACE_ITER_NORMAL,
 516                                             iwl_mvm_pm_disable_iterator, mvm);
 517         }
 518
 519         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 520         if (ret)
 521                 goto out_release;
 522
 523         /*
 524          * Update power state on the new interface. Admittedly, based on
 525          * mac80211 logics this power update will disable power management
 526          */
 527         iwl_mvm_power_update_mode(mvm, vif);
 528
 529         /*
 530          * P2P_DEVICE interface does not have a channel context assigned to it,
 531          * so a dedicated PHY context is allocated to it and the corresponding
 532          * MAC context is bound to it at this stage.
 533          */
 534         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 535                 struct ieee80211_channel *chan;
 536                 struct cfg80211_chan_def chandef;
 537
 538                 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
 539
 540                 /*
 541                  * The channel used here isn't relevant as it's
 542                  * going to be overwritten as part of the ROC flow.
 543                  * For now use the first channel we have.
 544                  */
 545                 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 546                 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 547                 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
 548                                            &chandef, 1, 1);
 549                 if (ret)
 550                         goto out_remove_mac;
 551
 552                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 553                 if (ret)
 554                         goto out_remove_phy;
 555
 556                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 557                 if (ret)
 558                         goto out_unbind;
 559
 560                 /* Save a pointer to p2p device vif, so it can later be used to
 561                  * update the p2p device MAC when a GO is started/stopped */
 562                 mvm->p2p_device_vif = vif;
 563         }
 564
 565         goto out_unlock;
 566
 567  out_unbind:
 568         iwl_mvm_binding_remove_vif(mvm, vif);
 569  out_remove_phy:
 570         iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 571  out_remove_mac:
 572         mvmvif->phy_ctxt = NULL;
 573         iwl_mvm_mac_ctxt_remove(mvm, vif);
 574  out_release:
 575         /*
 576          * TODO: remove this temporary code.
 577          * Currently MVM FW supports power management only on single MAC.
 578          * Check if only one additional interface remains after rereasing
 579          * current one. Update power mode on the remaining interface.
 580          */
 581         mvm->vif_count--;
 582         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 583                            mvm->vif_count);
 584         if (mvm->vif_count == 1) {
 585                 ieee80211_iterate_active_interfaces(
 586                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 587                                         iwl_mvm_power_update_iterator, mvm);
 588         }
 589         iwl_mvm_mac_ctxt_release(mvm, vif);
 590  out_unlock:
 591         mutex_unlock(&mvm->mutex);
 592
 593         return ret;
 594 }
 595
 596 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 597                                         struct ieee80211_vif *vif)
 598 {
 599         u32 tfd_msk = 0, ac;
 600
 601         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 602                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 603                         tfd_msk |= BIT(vif->hw_queue[ac]);
 604
 605         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 606                 tfd_msk |= BIT(vif->cab_queue);
 607
 608         if (tfd_msk) {
 609                 mutex_lock(&mvm->mutex);
 610                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 611                 mutex_unlock(&mvm->mutex);
 612         }
 613
 614         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 615                 /*
 616                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 617                  * We assume here that all the packets sent to the OFFCHANNEL
 618                  * queue are sent in ROC session.
 619                  */
 620                 flush_work(&mvm->roc_done_wk);
 621         } else {
 622                 /*
 623                  * By now, all the AC queues are empty. The AGG queues are
 624                  * empty too. We already got all the Tx responses for all the
 625                  * packets in the queues. The drain work can have been
 626                  * triggered. Flush it. This work item takes the mutex, so kill
 627                  * it before we take it.
 628                  */
 629                 flush_work(&mvm->sta_drained_wk);
 630         }
 631 }
 632
 633 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 634                                          struct ieee80211_vif *vif)
 635 {
 636         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 637         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 638
 639         iwl_mvm_prepare_mac_removal(mvm, vif);
 640
 641         mutex_lock(&mvm->mutex);
 642
 643         /*
 644          * For AP/GO interface, the tear down of the resources allocated to the
 645          * interface is be handled as part of the stop_ap flow.
 646          */
 647         if (vif->type == NL80211_IFTYPE_AP) {
 648                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 649                 goto out_release;
 650         }
 651
 652         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 653                 mvm->p2p_device_vif = NULL;
 654                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 655                 iwl_mvm_binding_remove_vif(mvm, vif);
 656                 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 657                 mvmvif->phy_ctxt = NULL;
 658         }
 659
 660         /*
 661          * TODO: remove this temporary code.
 662          * Currently MVM FW supports power management only on single MAC.
 663          * Check if only one additional interface remains after removing
 664          * current one. Update power mode on the remaining interface.
 665          */
 666         if (mvm->vif_count)
 667                 mvm->vif_count--;
 668         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 669                            mvm->vif_count);
 670         if (mvm->vif_count == 1) {
 671                 ieee80211_iterate_active_interfaces(
 672                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 673                                         iwl_mvm_power_update_iterator, mvm);
 674         }
 675
 676         iwl_mvm_mac_ctxt_remove(mvm, vif);
 677
 678 out_release:
 679         iwl_mvm_mac_ctxt_release(mvm, vif);
 680         mutex_unlock(&mvm->mutex);
 681 }
 682
 683 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 684 {
 685         return 0;
 686 }
 687
 688 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 689                                      unsigned int changed_flags,
 690                                      unsigned int *total_flags,
 691                                      u64 multicast)
 692 {
 693         *total_flags = 0;
 694 }
 695
 696 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 697                                              struct ieee80211_vif *vif,
 698                                              struct ieee80211_bss_conf *bss_conf,
 699                                              u32 changes)
 700 {
 701         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 702         int ret;
 703
 704         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 705         if (ret)
 706                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 707
 708         if (changes & BSS_CHANGED_ASSOC) {
 709                 if (bss_conf->assoc) {
 710                         /* add quota for this interface */
 711                         ret = iwl_mvm_update_quotas(mvm, vif);
 712                         if (ret) {
 713                                 IWL_ERR(mvm, "failed to update quotas\n");
 714                                 return;
 715                         }
 716                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 717                         /* remove AP station now that the MAC is unassoc */
 718                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 719                         if (ret)
 720                                 IWL_ERR(mvm, "failed to remove AP station\n");
 721                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 722                         /* remove quota for this interface */
 723                         ret = iwl_mvm_update_quotas(mvm, NULL);
 724                         if (ret)
 725                                 IWL_ERR(mvm, "failed to update quotas\n");
 726                 }
 727         } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 728                 /*
 729                  * We received a beacon _after_ association so
 730                  * remove the session protection.
 731                  */
 732                 iwl_mvm_remove_time_event(mvm, mvmvif,
 733                                           &mvmvif->time_event_data);
 734         } else if (changes & BSS_CHANGED_PS) {
 735                 /*
 736                  * TODO: remove this temporary code.
 737                  * Currently MVM FW supports power management only on single
 738                  * MAC. Avoid power mode update if more than one interface
 739                  * is active.
 740                  */
 741                 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 742                                    mvm->vif_count);
 743                 if (mvm->vif_count == 1) {
 744                         ret = iwl_mvm_power_update_mode(mvm, vif);
 745                         if (ret)
 746                                 IWL_ERR(mvm, "failed to update power mode\n");
 747                 }
 748         }
 749 }
 750
 751 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 752 {
 753         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 754         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 755         int ret;
 756
 757         mutex_lock(&mvm->mutex);
 758
 759         /* Send the beacon template */
 760         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 761         if (ret)
 762                 goto out_unlock;
 763
 764         /* Add the mac context */
 765         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 766         if (ret)
 767                 goto out_unlock;
 768
 769         /* Perform the binding */
 770         ret = iwl_mvm_binding_add_vif(mvm, vif);
 771         if (ret)
 772                 goto out_remove;
 773
 774         mvmvif->ap_active = true;
 775
 776         /* Send the bcast station. At this stage the TBTT and DTIM time events
 777          * are added and applied to the scheduler */
 778         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 779         if (ret)
 780                 goto out_unbind;
 781
 782         ret = iwl_mvm_update_quotas(mvm, vif);
 783         if (ret)
 784                 goto out_rm_bcast;
 785
 786         /* Need to update the P2P Device MAC */
 787         if (vif->p2p && mvm->p2p_device_vif)
 788                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 789
 790         mutex_unlock(&mvm->mutex);
 791         return 0;
 792
 793 out_rm_bcast:
 794         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 795 out_unbind:
 796         iwl_mvm_binding_remove_vif(mvm, vif);
 797 out_remove:
 798         iwl_mvm_mac_ctxt_remove(mvm, vif);
 799 out_unlock:
 800         mutex_unlock(&mvm->mutex);
 801         return ret;
 802 }
 803
 804 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 805 {
 806         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 807         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 808
 809         iwl_mvm_prepare_mac_removal(mvm, vif);
 810
 811         mutex_lock(&mvm->mutex);
 812
 813         mvmvif->ap_active = false;
 814
 815         /* Need to update the P2P Device MAC */
 816         if (vif->p2p && mvm->p2p_device_vif)
 817                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 818
 819         iwl_mvm_update_quotas(mvm, NULL);
 820         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 821         iwl_mvm_binding_remove_vif(mvm, vif);
 822         iwl_mvm_mac_ctxt_remove(mvm, vif);
 823
 824         mutex_unlock(&mvm->mutex);
 825 }
 826
 827 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
 828                                         struct ieee80211_vif *vif,
 829                                         struct ieee80211_bss_conf *bss_conf,
 830                                         u32 changes)
 831 {
 832         /* Need to send a new beacon template to the FW */
 833         if (changes & BSS_CHANGED_BEACON) {
 834                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
 835                         IWL_WARN(mvm, "Failed updating beacon data\n");
 836         }
 837 }
 838
 839 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
 840                                      struct ieee80211_vif *vif,
 841                                      struct ieee80211_bss_conf *bss_conf,
 842                                      u32 changes)
 843 {
 844         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 845
 846         mutex_lock(&mvm->mutex);
 847
 848         switch (vif->type) {
 849         case NL80211_IFTYPE_STATION:
 850                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
 851                 break;
 852         case NL80211_IFTYPE_AP:
 853                 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
 854                 break;
 855         default:
 856                 /* shouldn't happen */
 857                 WARN_ON_ONCE(1);
 858         }
 859
 860         mutex_unlock(&mvm->mutex);
 861 }
 862
 863 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 864                                struct ieee80211_vif *vif,
 865                                struct cfg80211_scan_request *req)
 866 {
 867         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 868         int ret;
 869
 870         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
 871                 return -EINVAL;
 872
 873         mutex_lock(&mvm->mutex);
 874
 875         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
 876                 ret = iwl_mvm_scan_request(mvm, vif, req);
 877         else
 878                 ret = -EBUSY;
 879
 880         mutex_unlock(&mvm->mutex);
 881
 882         return ret;
 883 }
 884
 885 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 886                                        struct ieee80211_vif *vif)
 887 {
 888         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 889
 890         mutex_lock(&mvm->mutex);
 891
 892         iwl_mvm_cancel_scan(mvm);
 893
 894         mutex_unlock(&mvm->mutex);
 895 }
 896
 897 static void
 898 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
 899                                   struct ieee80211_sta *sta, u16 tid,
 900                                   int num_frames,
 901                                   enum ieee80211_frame_release_type reason,
 902                                   bool more_data)
 903 {
 904         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 905
 906         /* TODO: how do we tell the fw to send frames for a specific TID */
 907
 908         /*
 909          * The fw will send EOSP notification when the last frame will be
 910          * transmitted.
 911          */
 912         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
 913 }
 914
 915 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 916                                    struct ieee80211_vif *vif,
 917                                    enum sta_notify_cmd cmd,
 918                                    struct ieee80211_sta *sta)
 919 {
 920         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 921         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 922
 923         switch (cmd) {
 924         case STA_NOTIFY_SLEEP:
 925                 if (atomic_read(&mvmsta->pending_frames) > 0)
 926                         ieee80211_sta_block_awake(hw, sta, true);
 927                 /*
 928                  * The fw updates the STA to be asleep. Tx packets on the Tx
 929                  * queues to this station will not be transmitted. The fw will
 930                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
 931                  */
 932                 break;
 933         case STA_NOTIFY_AWAKE:
 934                 if (WARN_ON(mvmsta->sta_id == IWL_INVALID_STATION))
 935                         break;
 936                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
 937                 break;
 938         default:
 939                 break;
 940         }
 941 }
 942
 943 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 944                                  struct ieee80211_vif *vif,
 945                                  struct ieee80211_sta *sta,
 946                                  enum ieee80211_sta_state old_state,
 947                                  enum ieee80211_sta_state new_state)
 948 {
 949         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 950         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 951         int ret;
 952
 953         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
 954                            sta->addr, old_state, new_state);
 955
 956         /* this would be a mac80211 bug ... but don't crash */
 957         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
 958                 return -EINVAL;
 959
 960         /* if a STA is being removed, reuse its ID */
 961         flush_work(&mvm->sta_drained_wk);
 962
 963         mutex_lock(&mvm->mutex);
 964         if (old_state == IEEE80211_STA_NOTEXIST &&
 965             new_state == IEEE80211_STA_NONE) {
 966                 ret = iwl_mvm_add_sta(mvm, vif, sta);
 967         } else if (old_state == IEEE80211_STA_NONE &&
 968                    new_state == IEEE80211_STA_AUTH) {
 969                 ret = 0;
 970         } else if (old_state == IEEE80211_STA_AUTH &&
 971                    new_state == IEEE80211_STA_ASSOC) {
 972                 ret = iwl_mvm_update_sta(mvm, vif, sta);
 973                 if (ret == 0)
 974                         iwl_mvm_rs_rate_init(mvm, sta,
 975                                              mvmvif->phy_ctxt->channel->band);
 976         } else if (old_state == IEEE80211_STA_ASSOC &&
 977                    new_state == IEEE80211_STA_AUTHORIZED) {
 978                 ret = 0;
 979         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
 980                    new_state == IEEE80211_STA_ASSOC) {
 981                 ret = 0;
 982         } else if (old_state == IEEE80211_STA_ASSOC &&
 983                    new_state == IEEE80211_STA_AUTH) {
 984                 ret = 0;
 985         } else if (old_state == IEEE80211_STA_AUTH &&
 986                    new_state == IEEE80211_STA_NONE) {
 987                 ret = 0;
 988         } else if (old_state == IEEE80211_STA_NONE &&
 989                    new_state == IEEE80211_STA_NOTEXIST) {
 990                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
 991         } else {
 992                 ret = -EIO;
 993         }
 994         mutex_unlock(&mvm->mutex);
 995
 996         return ret;
 997 }
 998
 999 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1000 {
1001         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1002
1003         mvm->rts_threshold = value;
1004
1005         return 0;
1006 }
1007
1008 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1009                                struct ieee80211_vif *vif, u16 ac,
1010                                const struct ieee80211_tx_queue_params *params)
1011 {
1012         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1013         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1014
1015         mvmvif->queue_params[ac] = *params;
1016
1017         /*
1018          * No need to update right away, we'll get BSS_CHANGED_QOS
1019          * The exception is P2P_DEVICE interface which needs immediate update.
1020          */
1021         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1022                 int ret;
1023
1024                 mutex_lock(&mvm->mutex);
1025                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1026                 mutex_unlock(&mvm->mutex);
1027                 return ret;
1028         }
1029         return 0;
1030 }
1031
1032 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1033                                       struct ieee80211_vif *vif)
1034 {
1035         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1036         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1037                            200 + vif->bss_conf.beacon_int);
1038         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1039                                100 + vif->bss_conf.beacon_int);
1040
1041         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1042                 return;
1043
1044         mutex_lock(&mvm->mutex);
1045         /* Try really hard to protect the session and hear a beacon */
1046         iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1047         mutex_unlock(&mvm->mutex);
1048 }
1049
1050 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1051                                enum set_key_cmd cmd,
1052                                struct ieee80211_vif *vif,
1053                                struct ieee80211_sta *sta,
1054                                struct ieee80211_key_conf *key)
1055 {
1056         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1057         int ret;
1058
1059         if (iwlwifi_mod_params.sw_crypto) {
1060                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1061                 return -EOPNOTSUPP;
1062         }
1063
1064         switch (key->cipher) {
1065         case WLAN_CIPHER_SUITE_TKIP:
1066                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1067                 /* fall-through */
1068         case WLAN_CIPHER_SUITE_CCMP:
1069                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1070                 break;
1071         case WLAN_CIPHER_SUITE_AES_CMAC:
1072                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1073                 break;
1074         case WLAN_CIPHER_SUITE_WEP40:
1075         case WLAN_CIPHER_SUITE_WEP104:
1076                 /*
1077                  * Support for TX only, at least for now, so accept
1078                  * the key and do nothing else. Then mac80211 will
1079                  * pass it for TX but we don't have to use it for RX.
1080                  */
1081                 return 0;
1082         default:
1083                 return -EOPNOTSUPP;
1084         }
1085
1086         mutex_lock(&mvm->mutex);
1087
1088         switch (cmd) {
1089         case SET_KEY:
1090                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1091                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1092                 if (ret) {
1093                         IWL_WARN(mvm, "set key failed\n");
1094                         /*
1095                          * can't add key for RX, but we don't need it
1096                          * in the device for TX so still return 0
1097                          */
1098                         ret = 0;
1099                 }
1100
1101                 break;
1102         case DISABLE_KEY:
1103                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1104                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1105                 break;
1106         default:
1107                 ret = -EINVAL;
1108         }
1109
1110         mutex_unlock(&mvm->mutex);
1111         return ret;
1112 }
1113
1114 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1115                                         struct ieee80211_vif *vif,
1116                                         struct ieee80211_key_conf *keyconf,
1117                                         struct ieee80211_sta *sta,
1118                                         u32 iv32, u16 *phase1key)
1119 {
1120         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1121
1122         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1123 }
1124
1125
1126 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1127                        struct ieee80211_vif *vif,
1128                        struct ieee80211_channel *channel,
1129                        int duration,
1130                        enum ieee80211_roc_type type)
1131 {
1132         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1133         struct cfg80211_chan_def chandef;
1134         int ret;
1135
1136         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1137                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1138                 return -EINVAL;
1139         }
1140
1141         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1142                            duration, type);
1143
1144         mutex_lock(&mvm->mutex);
1145
1146         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1147         ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1148                                        &chandef, 1, 1);
1149
1150         /* Schedule the time events */
1151         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration);
1152
1153         mutex_unlock(&mvm->mutex);
1154         IWL_DEBUG_MAC80211(mvm, "leave\n");
1155
1156         return ret;
1157 }
1158
1159 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1160 {
1161         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1162
1163         IWL_DEBUG_MAC80211(mvm, "enter\n");
1164
1165         mutex_lock(&mvm->mutex);
1166         iwl_mvm_stop_p2p_roc(mvm);
1167         mutex_unlock(&mvm->mutex);
1168
1169         IWL_DEBUG_MAC80211(mvm, "leave\n");
1170         return 0;
1171 }
1172
1173 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1174                                struct ieee80211_chanctx_conf *ctx)
1175 {
1176         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1177         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1178         int ret;
1179
1180         mutex_lock(&mvm->mutex);
1181
1182         IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1183         ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1184                                    ctx->rx_chains_static,
1185                                    ctx->rx_chains_dynamic);
1186         mutex_unlock(&mvm->mutex);
1187         return ret;
1188 }
1189
1190 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1191                                    struct ieee80211_chanctx_conf *ctx)
1192 {
1193         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1194         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1195
1196         mutex_lock(&mvm->mutex);
1197         iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1198         mutex_unlock(&mvm->mutex);
1199 }
1200
1201 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1202                                    struct ieee80211_chanctx_conf *ctx,
1203                                    u32 changed)
1204 {
1205         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1206         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1207
1208         mutex_lock(&mvm->mutex);
1209         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1210                                  ctx->rx_chains_static,
1211                                  ctx->rx_chains_dynamic);
1212         mutex_unlock(&mvm->mutex);
1213 }
1214
1215 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1216                                       struct ieee80211_vif *vif,
1217                                       struct ieee80211_chanctx_conf *ctx)
1218 {
1219         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1220         struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1221         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1222         int ret;
1223
1224         mutex_lock(&mvm->mutex);
1225
1226         mvmvif->phy_ctxt = phyctx;
1227
1228         switch (vif->type) {
1229         case NL80211_IFTYPE_AP:
1230                 /*
1231                  * The AP binding flow is handled as part of the start_ap flow
1232                  * (in bss_info_changed).
1233                  */
1234                 ret = 0;
1235                 goto out_unlock;
1236         case NL80211_IFTYPE_STATION:
1237         case NL80211_IFTYPE_ADHOC:
1238         case NL80211_IFTYPE_MONITOR:
1239                 break;
1240         default:
1241                 ret = -EINVAL;
1242                 goto out_unlock;
1243         }
1244
1245         ret = iwl_mvm_binding_add_vif(mvm, vif);
1246         if (ret)
1247                 goto out_unlock;
1248
1249         /*
1250          * Setting the quota at this stage is only required for monitor
1251          * interfaces. For the other types, the bss_info changed flow
1252          * will handle quota settings.
1253          */
1254         if (vif->type == NL80211_IFTYPE_MONITOR) {
1255                 ret = iwl_mvm_update_quotas(mvm, vif);
1256                 if (ret)
1257                         goto out_remove_binding;
1258         }
1259
1260         goto out_unlock;
1261
1262  out_remove_binding:
1263         iwl_mvm_binding_remove_vif(mvm, vif);
1264  out_unlock:
1265         mutex_unlock(&mvm->mutex);
1266         if (ret)
1267                 mvmvif->phy_ctxt = NULL;
1268         return ret;
1269 }
1270
1271 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1272                                          struct ieee80211_vif *vif,
1273                                          struct ieee80211_chanctx_conf *ctx)
1274 {
1275         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1276         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1277
1278         mutex_lock(&mvm->mutex);
1279
1280         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1281
1282         if (vif->type == NL80211_IFTYPE_AP)
1283                 goto out_unlock;
1284
1285         iwl_mvm_binding_remove_vif(mvm, vif);
1286         switch (vif->type) {
1287         case NL80211_IFTYPE_MONITOR:
1288                 iwl_mvm_update_quotas(mvm, vif);
1289                 break;
1290         default:
1291                 break;
1292         }
1293
1294 out_unlock:
1295         mvmvif->phy_ctxt = NULL;
1296         mutex_unlock(&mvm->mutex);
1297 }
1298
1299 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1300                            struct ieee80211_sta *sta,
1301                            bool set)
1302 {
1303         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1304         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1305
1306         if (!mvm_sta || !mvm_sta->vif) {
1307                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1308                 return -EINVAL;
1309         }
1310
1311         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1312 }
1313
1314 struct ieee80211_ops iwl_mvm_hw_ops = {
1315         .tx = iwl_mvm_mac_tx,
1316         .ampdu_action = iwl_mvm_mac_ampdu_action,
1317         .start = iwl_mvm_mac_start,
1318         .restart_complete = iwl_mvm_mac_restart_complete,
1319         .stop = iwl_mvm_mac_stop,
1320         .add_interface = iwl_mvm_mac_add_interface,
1321         .remove_interface = iwl_mvm_mac_remove_interface,
1322         .config = iwl_mvm_mac_config,
1323         .configure_filter = iwl_mvm_configure_filter,
1324         .bss_info_changed = iwl_mvm_bss_info_changed,
1325         .hw_scan = iwl_mvm_mac_hw_scan,
1326         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1327         .sta_state = iwl_mvm_mac_sta_state,
1328         .sta_notify = iwl_mvm_mac_sta_notify,
1329         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1330         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1331         .conf_tx = iwl_mvm_mac_conf_tx,
1332         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1333         .set_key = iwl_mvm_mac_set_key,
1334         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1335         .remain_on_channel = iwl_mvm_roc,
1336         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1337
1338         .add_chanctx = iwl_mvm_add_chanctx,
1339         .remove_chanctx = iwl_mvm_remove_chanctx,
1340         .change_chanctx = iwl_mvm_change_chanctx,
1341         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1342         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1343
1344         .start_ap = iwl_mvm_start_ap,
1345         .stop_ap = iwl_mvm_stop_ap,
1346
1347         .set_tim = iwl_mvm_set_tim,
1348
1349 #ifdef CONFIG_PM_SLEEP
1350         /* look at d3.c */
1351         .suspend = iwl_mvm_suspend,
1352         .resume = iwl_mvm_resume,
1353         .set_wakeup = iwl_mvm_set_wakeup,
1354         .set_rekey_data = iwl_mvm_set_rekey_data,
1355 #if IS_ENABLED(CONFIG_IPV6)
1356         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1357 #endif
1358         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1359 #endif
1360 };