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