Pileus Git - ~andy/linux/blob - drivers/net/wireless/iwlwifi/mvm/mac80211.c

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  22  * USA
  23  *
  24  * The full GNU General Public License is included in this distribution
  25  * in the file called COPYING.
  26  *
  27  * Contact Information:
  28  *  Intel Linux Wireless <ilw@linux.intel.com>
  29  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  30  *
  31  * BSD LICENSE
  32  *
  33  * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  *
  40  *  * Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  *  * Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
  46  *  * Neither the name Intel Corporation nor the names of its
  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <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
  89 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
  90         {
  91                 .num_different_channels = 1,
  92                 .max_interfaces = 3,
  93                 .limits = iwl_mvm_limits,
  94                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
  95         },
  96 };
  97
  98 #ifdef CONFIG_PM_SLEEP
  99 static const struct nl80211_wowlan_tcp_data_token_feature
 100 iwl_mvm_wowlan_tcp_token_feature = {
 101         .min_len = 0,
 102         .max_len = 255,
 103         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 104 };
 105
 106 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 107         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 108         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 109                             sizeof(struct ethhdr) -
 110                             sizeof(struct iphdr) -
 111                             sizeof(struct tcphdr),
 112         .data_interval_max = 65535, /* __le16 in API */
 113         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 114                             sizeof(struct ethhdr) -
 115                             sizeof(struct iphdr) -
 116                             sizeof(struct tcphdr),
 117         .seq = true,
 118 };
 119 #endif
 120
 121 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 122 {
 123         struct ieee80211_hw *hw = mvm->hw;
 124         int num_mac, ret, i;
 125
 126         /* Tell mac80211 our characteristics */
 127         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 128                     IEEE80211_HW_SPECTRUM_MGMT |
 129                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 130                     IEEE80211_HW_QUEUE_CONTROL |
 131                     IEEE80211_HW_WANT_MONITOR_VIF |
 132                     IEEE80211_HW_SUPPORTS_PS |
 133                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 134                     IEEE80211_HW_AMPDU_AGGREGATION |
 135                     IEEE80211_HW_TIMING_BEACON_ONLY;
 136
 137         hw->queues = IWL_MVM_FIRST_AGG_QUEUE;
 138         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 139         hw->rate_control_algorithm = "iwl-mvm-rs";
 140
 141         /*
 142          * Enable 11w if advertised by firmware and software crypto
 143          * is not enabled (as the firmware will interpret some mgmt
 144          * packets, so enabling it with software crypto isn't safe)
 145          */
 146         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 147             !iwlwifi_mod_params.sw_crypto)
 148                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 149
 150         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 151         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 152         hw->chanctx_data_size = sizeof(struct iwl_mvm_phy_ctxt);
 153
 154         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 155                 BIT(NL80211_IFTYPE_AP);
 156
 157         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
 158                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
 159                             WIPHY_FLAG_IBSS_RSN;
 160
 161         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 162         hw->wiphy->n_iface_combinations =
 163                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 164
 165         hw->wiphy->max_remain_on_channel_duration = 10000;
 166         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 167
 168         /* Extract MAC address */
 169         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 170         hw->wiphy->addresses = mvm->addresses;
 171         hw->wiphy->n_addresses = 1;
 172
 173         /* Extract additional MAC addresses if available */
 174         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 175                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 176
 177         for (i = 1; i < num_mac; i++) {
 178                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 179                        ETH_ALEN);
 180                 mvm->addresses[i].addr[5]++;
 181                 hw->wiphy->n_addresses++;
 182         }
 183
 184         /* we create the 802.11 header and a max-length SSID element */
 185         hw->wiphy->max_scan_ie_len =
 186                 mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 187         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 188
 189         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 190                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 191                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 192         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 193                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 194                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 195
 196         hw->wiphy->hw_version = mvm->trans->hw_id;
 197
 198         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 199                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 200         else
 201                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 202
 203         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 204                                NL80211_FEATURE_P2P_GO_OPPPS;
 205
 206         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 207
 208 #ifdef CONFIG_PM_SLEEP
 209         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 210             mvm->trans->ops->d3_suspend &&
 211             mvm->trans->ops->d3_resume &&
 212             device_can_wakeup(mvm->trans->dev)) {
 213                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 214                                           WIPHY_WOWLAN_DISCONNECT |
 215                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 216                                           WIPHY_WOWLAN_RFKILL_RELEASE;
 217                 if (!iwlwifi_mod_params.sw_crypto)
 218                         hw->wiphy->wowlan.flags |=
 219                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 220                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 221                                 WIPHY_WOWLAN_4WAY_HANDSHAKE;
 222
 223                 hw->wiphy->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 224                 hw->wiphy->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 225                 hw->wiphy->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 226                 hw->wiphy->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 227         }
 228 #endif
 229
 230         ret = iwl_mvm_leds_init(mvm);
 231         if (ret)
 232                 return ret;
 233
 234         return ieee80211_register_hw(mvm->hw);
 235 }
 236
 237 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 238                            struct ieee80211_tx_control *control,
 239                            struct sk_buff *skb)
 240 {
 241         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 242
 243         if (test_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status)) {
 244                 IWL_DEBUG_DROP(mvm, "Dropping - RF KILL\n");
 245                 goto drop;
 246         }
 247
 248         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 249             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 250                 goto drop;
 251
 252         if (control->sta) {
 253                 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
 254                         goto drop;
 255                 return;
 256         }
 257
 258         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 259                 goto drop;
 260         return;
 261  drop:
 262         ieee80211_free_txskb(hw, skb);
 263 }
 264
 265 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 266                                     struct ieee80211_vif *vif,
 267                                     enum ieee80211_ampdu_mlme_action action,
 268                                     struct ieee80211_sta *sta, u16 tid,
 269                                     u16 *ssn, u8 buf_size)
 270 {
 271         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 272         int ret;
 273
 274         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 275                      sta->addr, tid, action);
 276
 277         if (!(mvm->nvm_data->sku_cap_11n_enable))
 278                 return -EACCES;
 279
 280         mutex_lock(&mvm->mutex);
 281
 282         switch (action) {
 283         case IEEE80211_AMPDU_RX_START:
 284                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
 285                         ret = -EINVAL;
 286                         break;
 287                 }
 288                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 289                 break;
 290         case IEEE80211_AMPDU_RX_STOP:
 291                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 292                 break;
 293         case IEEE80211_AMPDU_TX_START:
 294                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
 295                         ret = -EINVAL;
 296                         break;
 297                 }
 298                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 299                 break;
 300         case IEEE80211_AMPDU_TX_STOP_CONT:
 301                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 302                 break;
 303         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 304         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 305                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 306                 break;
 307         case IEEE80211_AMPDU_TX_OPERATIONAL:
 308                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 309                 break;
 310         default:
 311                 WARN_ON_ONCE(1);
 312                 ret = -EINVAL;
 313                 break;
 314         }
 315         mutex_unlock(&mvm->mutex);
 316
 317         return ret;
 318 }
 319
 320 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 321                                      struct ieee80211_vif *vif)
 322 {
 323         struct iwl_mvm *mvm = data;
 324         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 325
 326         mvmvif->uploaded = false;
 327         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 328
 329         /* does this make sense at all? */
 330         mvmvif->color++;
 331
 332         spin_lock_bh(&mvm->time_event_lock);
 333         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 334         spin_unlock_bh(&mvm->time_event_lock);
 335
 336         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 337                 mvmvif->phy_ctxt = NULL;
 338 }
 339
 340 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 341 {
 342         iwl_trans_stop_device(mvm->trans);
 343         iwl_trans_stop_hw(mvm->trans, false);
 344
 345         mvm->scan_status = IWL_MVM_SCAN_NONE;
 346
 347         /* just in case one was running */
 348         ieee80211_remain_on_channel_expired(mvm->hw);
 349
 350         ieee80211_iterate_active_interfaces_atomic(
 351                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 352                 iwl_mvm_cleanup_iterator, mvm);
 353
 354         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 355         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 356
 357         ieee80211_wake_queues(mvm->hw);
 358
 359         mvm->vif_count = 0;
 360 }
 361
 362 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 363 {
 364         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 365         int ret;
 366
 367         mutex_lock(&mvm->mutex);
 368
 369         /* Clean up some internal and mac80211 state on restart */
 370         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 371                 iwl_mvm_restart_cleanup(mvm);
 372
 373         ret = iwl_mvm_up(mvm);
 374         mutex_unlock(&mvm->mutex);
 375
 376         return ret;
 377 }
 378
 379 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 380 {
 381         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 382         int ret;
 383
 384         mutex_lock(&mvm->mutex);
 385
 386         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 387         ret = iwl_mvm_update_quotas(mvm, NULL);
 388         if (ret)
 389                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 390                         ret);
 391
 392         mutex_unlock(&mvm->mutex);
 393 }
 394
 395 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 396 {
 397         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 398
 399         flush_work(&mvm->async_handlers_wk);
 400
 401         mutex_lock(&mvm->mutex);
 402         /* async_handlers_wk is now blocked */
 403
 404         /*
 405          * The work item could be running or queued if the
 406          * ROC time event stops just as we get here.
 407          */
 408         cancel_work_sync(&mvm->roc_done_wk);
 409
 410         iwl_trans_stop_device(mvm->trans);
 411         iwl_trans_stop_hw(mvm->trans, false);
 412
 413         iwl_mvm_async_handlers_purge(mvm);
 414         /* async_handlers_list is empty and will stay empty: HW is stopped */
 415
 416         /* the fw is stopped, the aux sta is dead: clean up driver state */
 417         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 418
 419         mutex_unlock(&mvm->mutex);
 420
 421         /*
 422          * The worker might have been waiting for the mutex, let it run and
 423          * discover that its list is now empty.
 424          */
 425         cancel_work_sync(&mvm->async_handlers_wk);
 426 }
 427
 428 static void iwl_mvm_pm_disable_iterator(void *data, u8 *mac,
 429                                         struct ieee80211_vif *vif)
 430 {
 431         struct iwl_mvm *mvm = data;
 432         int ret;
 433
 434         ret = iwl_mvm_power_disable(mvm, vif);
 435         if (ret)
 436                 IWL_ERR(mvm, "failed to disable power management\n");
 437 }
 438
 439 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 440                                           struct ieee80211_vif *vif)
 441 {
 442         struct iwl_mvm *mvm = data;
 443
 444         iwl_mvm_power_update_mode(mvm, vif);
 445 }
 446
 447 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 448                                      struct ieee80211_vif *vif)
 449 {
 450         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 451         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 452         int ret;
 453
 454         /*
 455          * Not much to do here. The stack will not allow interface
 456          * types or combinations that we didn't advertise, so we
 457          * don't really have to check the types.
 458          */
 459
 460         mutex_lock(&mvm->mutex);
 461
 462         /* Allocate resources for the MAC context, and add it the the fw  */
 463         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 464         if (ret)
 465                 goto out_unlock;
 466
 467         /*
 468          * The AP binding flow can be done only after the beacon
 469          * template is configured (which happens only in the mac80211
 470          * start_ap() flow), and adding the broadcast station can happen
 471          * only after the binding.
 472          * In addition, since modifying the MAC before adding a bcast
 473          * station is not allowed by the FW, delay the adding of MAC context to
 474          * the point where we can also add the bcast station.
 475          * In short: there's not much we can do at this point, other than
 476          * allocating resources :)
 477          */
 478         if (vif->type == NL80211_IFTYPE_AP) {
 479                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 480                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 481                                                qmask);
 482                 if (ret) {
 483                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 484                         goto out_release;
 485                 }
 486
 487                 goto out_unlock;
 488         }
 489
 490         /*
 491          * TODO: remove this temporary code.
 492          * Currently MVM FW supports power management only on single MAC.
 493          * If new interface added, disable PM on existing interface.
 494          * P2P device is a special case, since it is handled by FW similary to
 495          * scan. If P2P deviced is added, PM remains enabled on existing
 496          * interface.
 497          * Note: the method below does not count the new interface being added
 498          * at this moment.
 499          */
 500         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 501                 mvm->vif_count++;
 502         if (mvm->vif_count > 1) {
 503                 IWL_DEBUG_MAC80211(mvm,
 504                                    "Disable power on existing interfaces\n");
 505                 ieee80211_iterate_active_interfaces_atomic(
 506                                             mvm->hw,
 507                                             IEEE80211_IFACE_ITER_NORMAL,
 508                                             iwl_mvm_pm_disable_iterator, mvm);
 509         }
 510
 511         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 512         if (ret)
 513                 goto out_release;
 514
 515         /*
 516          * Update power state on the new interface. Admittedly, based on
 517          * mac80211 logics this power update will disable power management
 518          */
 519         iwl_mvm_power_update_mode(mvm, vif);
 520
 521         /*
 522          * P2P_DEVICE interface does not have a channel context assigned to it,
 523          * so a dedicated PHY context is allocated to it and the corresponding
 524          * MAC context is bound to it at this stage.
 525          */
 526         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 527                 struct ieee80211_channel *chan;
 528                 struct cfg80211_chan_def chandef;
 529
 530                 mvmvif->phy_ctxt = &mvm->phy_ctxt_roc;
 531
 532                 /*
 533                  * The channel used here isn't relevant as it's
 534                  * going to be overwritten as part of the ROC flow.
 535                  * For now use the first channel we have.
 536                  */
 537                 chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
 538                 cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
 539                 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt,
 540                                            &chandef, 1, 1);
 541                 if (ret)
 542                         goto out_remove_mac;
 543
 544                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 545                 if (ret)
 546                         goto out_remove_phy;
 547
 548                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 549                 if (ret)
 550                         goto out_unbind;
 551
 552                 /* Save a pointer to p2p device vif, so it can later be used to
 553                  * update the p2p device MAC when a GO is started/stopped */
 554                 mvm->p2p_device_vif = vif;
 555         }
 556
 557         iwl_mvm_vif_dbgfs_register(mvm, vif);
 558         goto out_unlock;
 559
 560  out_unbind:
 561         iwl_mvm_binding_remove_vif(mvm, vif);
 562  out_remove_phy:
 563         iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 564  out_remove_mac:
 565         mvmvif->phy_ctxt = NULL;
 566         iwl_mvm_mac_ctxt_remove(mvm, vif);
 567  out_release:
 568         /*
 569          * TODO: remove this temporary code.
 570          * Currently MVM FW supports power management only on single MAC.
 571          * Check if only one additional interface remains after releasing
 572          * current one. Update power mode on the remaining interface.
 573          */
 574         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 575                 mvm->vif_count--;
 576         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 577                            mvm->vif_count);
 578         if (mvm->vif_count == 1) {
 579                 ieee80211_iterate_active_interfaces(
 580                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 581                                         iwl_mvm_power_update_iterator, mvm);
 582         }
 583         iwl_mvm_mac_ctxt_release(mvm, vif);
 584  out_unlock:
 585         mutex_unlock(&mvm->mutex);
 586
 587         return ret;
 588 }
 589
 590 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 591                                         struct ieee80211_vif *vif)
 592 {
 593         u32 tfd_msk = 0, ac;
 594
 595         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 596                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 597                         tfd_msk |= BIT(vif->hw_queue[ac]);
 598
 599         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 600                 tfd_msk |= BIT(vif->cab_queue);
 601
 602         if (tfd_msk) {
 603                 mutex_lock(&mvm->mutex);
 604                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 605                 mutex_unlock(&mvm->mutex);
 606         }
 607
 608         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 609                 /*
 610                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 611                  * We assume here that all the packets sent to the OFFCHANNEL
 612                  * queue are sent in ROC session.
 613                  */
 614                 flush_work(&mvm->roc_done_wk);
 615         } else {
 616                 /*
 617                  * By now, all the AC queues are empty. The AGG queues are
 618                  * empty too. We already got all the Tx responses for all the
 619                  * packets in the queues. The drain work can have been
 620                  * triggered. Flush it. This work item takes the mutex, so kill
 621                  * it before we take it.
 622                  */
 623                 flush_work(&mvm->sta_drained_wk);
 624         }
 625 }
 626
 627 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 628                                          struct ieee80211_vif *vif)
 629 {
 630         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 631         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 632
 633         iwl_mvm_prepare_mac_removal(mvm, vif);
 634
 635         mutex_lock(&mvm->mutex);
 636
 637         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 638
 639         /*
 640          * For AP/GO interface, the tear down of the resources allocated to the
 641          * interface is be handled as part of the stop_ap flow.
 642          */
 643         if (vif->type == NL80211_IFTYPE_AP) {
 644                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 645                 goto out_release;
 646         }
 647
 648         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 649                 mvm->p2p_device_vif = NULL;
 650                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 651                 iwl_mvm_binding_remove_vif(mvm, vif);
 652                 iwl_mvm_phy_ctxt_remove(mvm, mvmvif->phy_ctxt);
 653                 mvmvif->phy_ctxt = NULL;
 654         }
 655
 656         /*
 657          * TODO: remove this temporary code.
 658          * Currently MVM FW supports power management only on single MAC.
 659          * Check if only one additional interface remains after removing
 660          * current one. Update power mode on the remaining interface.
 661          */
 662         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 663                 mvm->vif_count--;
 664         IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 665                            mvm->vif_count);
 666         if (mvm->vif_count == 1) {
 667                 ieee80211_iterate_active_interfaces(
 668                                         mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 669                                         iwl_mvm_power_update_iterator, mvm);
 670         }
 671
 672         iwl_mvm_mac_ctxt_remove(mvm, vif);
 673
 674 out_release:
 675         iwl_mvm_mac_ctxt_release(mvm, vif);
 676         mutex_unlock(&mvm->mutex);
 677 }
 678
 679 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 680 {
 681         return 0;
 682 }
 683
 684 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 685                                      unsigned int changed_flags,
 686                                      unsigned int *total_flags,
 687                                      u64 multicast)
 688 {
 689         *total_flags = 0;
 690 }
 691
 692 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 693                                              struct ieee80211_vif *vif,
 694                                              struct ieee80211_bss_conf *bss_conf,
 695                                              u32 changes)
 696 {
 697         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 698         int ret;
 699
 700         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 701         if (ret)
 702                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 703
 704         if (changes & BSS_CHANGED_ASSOC) {
 705                 if (bss_conf->assoc) {
 706                         /* add quota for this interface */
 707                         ret = iwl_mvm_update_quotas(mvm, vif);
 708                         if (ret) {
 709                                 IWL_ERR(mvm, "failed to update quotas\n");
 710                                 return;
 711                         }
 712                         iwl_mvm_bt_coex_vif_assoc(mvm, vif);
 713                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 714                         /* remove AP station now that the MAC is unassoc */
 715                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 716                         if (ret)
 717                                 IWL_ERR(mvm, "failed to remove AP station\n");
 718                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 719                         /* remove quota for this interface */
 720                         ret = iwl_mvm_update_quotas(mvm, NULL);
 721                         if (ret)
 722                                 IWL_ERR(mvm, "failed to update quotas\n");
 723                 }
 724         } else if (changes & BSS_CHANGED_DTIM_PERIOD) {
 725                 /*
 726                  * We received a beacon _after_ association so
 727                  * remove the session protection.
 728                  */
 729                 iwl_mvm_remove_time_event(mvm, mvmvif,
 730                                           &mvmvif->time_event_data);
 731         } else if (changes & BSS_CHANGED_PS) {
 732                 /*
 733                  * TODO: remove this temporary code.
 734                  * Currently MVM FW supports power management only on single
 735                  * MAC. Avoid power mode update if more than one interface
 736                  * is active.
 737                  */
 738                 IWL_DEBUG_MAC80211(mvm, "Currently %d interfaces active\n",
 739                                    mvm->vif_count);
 740                 if (mvm->vif_count == 1) {
 741                         ret = iwl_mvm_power_update_mode(mvm, vif);
 742                         if (ret)
 743                                 IWL_ERR(mvm, "failed to update power mode\n");
 744                 }
 745         }
 746 }
 747
 748 static int iwl_mvm_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 749 {
 750         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 751         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 752         int ret;
 753
 754         mutex_lock(&mvm->mutex);
 755
 756         /* Send the beacon template */
 757         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 758         if (ret)
 759                 goto out_unlock;
 760
 761         /* Add the mac context */
 762         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 763         if (ret)
 764                 goto out_unlock;
 765
 766         /* Perform the binding */
 767         ret = iwl_mvm_binding_add_vif(mvm, vif);
 768         if (ret)
 769                 goto out_remove;
 770
 771         mvmvif->ap_active = true;
 772
 773         /* Send the bcast station. At this stage the TBTT and DTIM time events
 774          * are added and applied to the scheduler */
 775         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 776         if (ret)
 777                 goto out_unbind;
 778
 779         ret = iwl_mvm_update_quotas(mvm, vif);
 780         if (ret)
 781                 goto out_rm_bcast;
 782
 783         /* Need to update the P2P Device MAC */
 784         if (vif->p2p && mvm->p2p_device_vif)
 785                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 786
 787         mutex_unlock(&mvm->mutex);
 788         return 0;
 789
 790 out_rm_bcast:
 791         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 792 out_unbind:
 793         iwl_mvm_binding_remove_vif(mvm, vif);
 794 out_remove:
 795         iwl_mvm_mac_ctxt_remove(mvm, vif);
 796 out_unlock:
 797         mutex_unlock(&mvm->mutex);
 798         return ret;
 799 }
 800
 801 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 802 {
 803         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 804         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 805
 806         iwl_mvm_prepare_mac_removal(mvm, vif);
 807
 808         mutex_lock(&mvm->mutex);
 809
 810         mvmvif->ap_active = false;
 811
 812         /* Need to update the P2P Device MAC */
 813         if (vif->p2p && mvm->p2p_device_vif)
 814                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
 815
 816         iwl_mvm_update_quotas(mvm, NULL);
 817         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 818         iwl_mvm_binding_remove_vif(mvm, vif);
 819         iwl_mvm_mac_ctxt_remove(mvm, vif);
 820
 821         mutex_unlock(&mvm->mutex);
 822 }
 823
 824 static void iwl_mvm_bss_info_changed_ap(struct iwl_mvm *mvm,
 825                                         struct ieee80211_vif *vif,
 826                                         struct ieee80211_bss_conf *bss_conf,
 827                                         u32 changes)
 828 {
 829         /* Need to send a new beacon template to the FW */
 830         if (changes & BSS_CHANGED_BEACON) {
 831                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
 832                         IWL_WARN(mvm, "Failed updating beacon data\n");
 833         }
 834 }
 835
 836 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
 837                                      struct ieee80211_vif *vif,
 838                                      struct ieee80211_bss_conf *bss_conf,
 839                                      u32 changes)
 840 {
 841         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 842
 843         mutex_lock(&mvm->mutex);
 844
 845         switch (vif->type) {
 846         case NL80211_IFTYPE_STATION:
 847                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
 848                 break;
 849         case NL80211_IFTYPE_AP:
 850                 iwl_mvm_bss_info_changed_ap(mvm, vif, bss_conf, changes);
 851                 break;
 852         default:
 853                 /* shouldn't happen */
 854                 WARN_ON_ONCE(1);
 855         }
 856
 857         mutex_unlock(&mvm->mutex);
 858 }
 859
 860 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
 861                                struct ieee80211_vif *vif,
 862                                struct cfg80211_scan_request *req)
 863 {
 864         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 865         int ret;
 866
 867         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
 868                 return -EINVAL;
 869
 870         mutex_lock(&mvm->mutex);
 871
 872         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
 873                 ret = iwl_mvm_scan_request(mvm, vif, req);
 874         else
 875                 ret = -EBUSY;
 876
 877         mutex_unlock(&mvm->mutex);
 878
 879         return ret;
 880 }
 881
 882 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
 883                                        struct ieee80211_vif *vif)
 884 {
 885         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 886
 887         mutex_lock(&mvm->mutex);
 888
 889         iwl_mvm_cancel_scan(mvm);
 890
 891         mutex_unlock(&mvm->mutex);
 892 }
 893
 894 static void
 895 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
 896                                   struct ieee80211_sta *sta, u16 tid,
 897                                   int num_frames,
 898                                   enum ieee80211_frame_release_type reason,
 899                                   bool more_data)
 900 {
 901         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 902
 903         /* TODO: how do we tell the fw to send frames for a specific TID */
 904
 905         /*
 906          * The fw will send EOSP notification when the last frame will be
 907          * transmitted.
 908          */
 909         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
 910 }
 911
 912 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
 913                                    struct ieee80211_vif *vif,
 914                                    enum sta_notify_cmd cmd,
 915                                    struct ieee80211_sta *sta)
 916 {
 917         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 918         struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
 919
 920         switch (cmd) {
 921         case STA_NOTIFY_SLEEP:
 922                 if (atomic_read(&mvmsta->pending_frames) > 0)
 923                         ieee80211_sta_block_awake(hw, sta, true);
 924                 /*
 925                  * The fw updates the STA to be asleep. Tx packets on the Tx
 926                  * queues to this station will not be transmitted. The fw will
 927                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
 928                  */
 929                 break;
 930         case STA_NOTIFY_AWAKE:
 931                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
 932                         break;
 933                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
 934                 break;
 935         default:
 936                 break;
 937         }
 938 }
 939
 940 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
 941                                  struct ieee80211_vif *vif,
 942                                  struct ieee80211_sta *sta,
 943                                  enum ieee80211_sta_state old_state,
 944                                  enum ieee80211_sta_state new_state)
 945 {
 946         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 947         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 948         int ret;
 949
 950         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
 951                            sta->addr, old_state, new_state);
 952
 953         /* this would be a mac80211 bug ... but don't crash */
 954         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
 955                 return -EINVAL;
 956
 957         /* if a STA is being removed, reuse its ID */
 958         flush_work(&mvm->sta_drained_wk);
 959
 960         mutex_lock(&mvm->mutex);
 961         if (old_state == IEEE80211_STA_NOTEXIST &&
 962             new_state == IEEE80211_STA_NONE) {
 963                 ret = iwl_mvm_add_sta(mvm, vif, sta);
 964         } else if (old_state == IEEE80211_STA_NONE &&
 965                    new_state == IEEE80211_STA_AUTH) {
 966                 ret = 0;
 967         } else if (old_state == IEEE80211_STA_AUTH &&
 968                    new_state == IEEE80211_STA_ASSOC) {
 969                 ret = iwl_mvm_update_sta(mvm, vif, sta);
 970                 if (ret == 0)
 971                         iwl_mvm_rs_rate_init(mvm, sta,
 972                                              mvmvif->phy_ctxt->channel->band);
 973         } else if (old_state == IEEE80211_STA_ASSOC &&
 974                    new_state == IEEE80211_STA_AUTHORIZED) {
 975                 ret = 0;
 976         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
 977                    new_state == IEEE80211_STA_ASSOC) {
 978                 ret = 0;
 979         } else if (old_state == IEEE80211_STA_ASSOC &&
 980                    new_state == IEEE80211_STA_AUTH) {
 981                 ret = 0;
 982         } else if (old_state == IEEE80211_STA_AUTH &&
 983                    new_state == IEEE80211_STA_NONE) {
 984                 ret = 0;
 985         } else if (old_state == IEEE80211_STA_NONE &&
 986                    new_state == IEEE80211_STA_NOTEXIST) {
 987                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
 988         } else {
 989                 ret = -EIO;
 990         }
 991         mutex_unlock(&mvm->mutex);
 992
 993         return ret;
 994 }
 995
 996 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 997 {
 998         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 999
1000         mvm->rts_threshold = value;
1001
1002         return 0;
1003 }
1004
1005 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1006                                struct ieee80211_vif *vif, u16 ac,
1007                                const struct ieee80211_tx_queue_params *params)
1008 {
1009         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1010         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1011
1012         mvmvif->queue_params[ac] = *params;
1013
1014         /*
1015          * No need to update right away, we'll get BSS_CHANGED_QOS
1016          * The exception is P2P_DEVICE interface which needs immediate update.
1017          */
1018         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1019                 int ret;
1020
1021                 mutex_lock(&mvm->mutex);
1022                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1023                 mutex_unlock(&mvm->mutex);
1024                 return ret;
1025         }
1026         return 0;
1027 }
1028
1029 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1030                                       struct ieee80211_vif *vif)
1031 {
1032         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1033         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1034                            200 + vif->bss_conf.beacon_int);
1035         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1036                                100 + vif->bss_conf.beacon_int);
1037
1038         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1039                 return;
1040
1041         mutex_lock(&mvm->mutex);
1042         /* Try really hard to protect the session and hear a beacon */
1043         iwl_mvm_protect_session(mvm, vif, duration, min_duration);
1044         mutex_unlock(&mvm->mutex);
1045 }
1046
1047 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1048                                enum set_key_cmd cmd,
1049                                struct ieee80211_vif *vif,
1050                                struct ieee80211_sta *sta,
1051                                struct ieee80211_key_conf *key)
1052 {
1053         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1054         int ret;
1055
1056         if (iwlwifi_mod_params.sw_crypto) {
1057                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1058                 return -EOPNOTSUPP;
1059         }
1060
1061         switch (key->cipher) {
1062         case WLAN_CIPHER_SUITE_TKIP:
1063                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1064                 /* fall-through */
1065         case WLAN_CIPHER_SUITE_CCMP:
1066                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1067                 break;
1068         case WLAN_CIPHER_SUITE_AES_CMAC:
1069                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1070                 break;
1071         case WLAN_CIPHER_SUITE_WEP40:
1072         case WLAN_CIPHER_SUITE_WEP104:
1073                 /*
1074                  * Support for TX only, at least for now, so accept
1075                  * the key and do nothing else. Then mac80211 will
1076                  * pass it for TX but we don't have to use it for RX.
1077                  */
1078                 return 0;
1079         default:
1080                 return -EOPNOTSUPP;
1081         }
1082
1083         mutex_lock(&mvm->mutex);
1084
1085         switch (cmd) {
1086         case SET_KEY:
1087                 if (vif->type == NL80211_IFTYPE_AP && !sta) {
1088                         /* GTK on AP interface is a TX-only key, return 0 */
1089                         ret = 0;
1090                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1091                         break;
1092                 }
1093
1094                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1095                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1096                 if (ret) {
1097                         IWL_WARN(mvm, "set key failed\n");
1098                         /*
1099                          * can't add key for RX, but we don't need it
1100                          * in the device for TX so still return 0
1101                          */
1102                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1103                         ret = 0;
1104                 }
1105
1106                 break;
1107         case DISABLE_KEY:
1108                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1109                         ret = 0;
1110                         break;
1111                 }
1112
1113                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1114                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1115                 break;
1116         default:
1117                 ret = -EINVAL;
1118         }
1119
1120         mutex_unlock(&mvm->mutex);
1121         return ret;
1122 }
1123
1124 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1125                                         struct ieee80211_vif *vif,
1126                                         struct ieee80211_key_conf *keyconf,
1127                                         struct ieee80211_sta *sta,
1128                                         u32 iv32, u16 *phase1key)
1129 {
1130         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1131
1132         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1133 }
1134
1135
1136 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1137                        struct ieee80211_vif *vif,
1138                        struct ieee80211_channel *channel,
1139                        int duration,
1140                        enum ieee80211_roc_type type)
1141 {
1142         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1143         struct cfg80211_chan_def chandef;
1144         int ret;
1145
1146         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1147                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1148                 return -EINVAL;
1149         }
1150
1151         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1152                            duration, type);
1153
1154         mutex_lock(&mvm->mutex);
1155
1156         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1157         ret = iwl_mvm_phy_ctxt_changed(mvm, &mvm->phy_ctxt_roc,
1158                                        &chandef, 1, 1);
1159
1160         /* Schedule the time events */
1161         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1162
1163         mutex_unlock(&mvm->mutex);
1164         IWL_DEBUG_MAC80211(mvm, "leave\n");
1165
1166         return ret;
1167 }
1168
1169 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1170 {
1171         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1172
1173         IWL_DEBUG_MAC80211(mvm, "enter\n");
1174
1175         mutex_lock(&mvm->mutex);
1176         iwl_mvm_stop_p2p_roc(mvm);
1177         mutex_unlock(&mvm->mutex);
1178
1179         IWL_DEBUG_MAC80211(mvm, "leave\n");
1180         return 0;
1181 }
1182
1183 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1184                                struct ieee80211_chanctx_conf *ctx)
1185 {
1186         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1187         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1188         int ret;
1189
1190         mutex_lock(&mvm->mutex);
1191
1192         IWL_DEBUG_MAC80211(mvm, "Add PHY context\n");
1193         ret = iwl_mvm_phy_ctxt_add(mvm, phy_ctxt, &ctx->def,
1194                                    ctx->rx_chains_static,
1195                                    ctx->rx_chains_dynamic);
1196         mutex_unlock(&mvm->mutex);
1197         return ret;
1198 }
1199
1200 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1201                                    struct ieee80211_chanctx_conf *ctx)
1202 {
1203         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1204         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1205
1206         mutex_lock(&mvm->mutex);
1207         iwl_mvm_phy_ctxt_remove(mvm, phy_ctxt);
1208         mutex_unlock(&mvm->mutex);
1209 }
1210
1211 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1212                                    struct ieee80211_chanctx_conf *ctx,
1213                                    u32 changed)
1214 {
1215         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1216         struct iwl_mvm_phy_ctxt *phy_ctxt = (void *)ctx->drv_priv;
1217
1218         mutex_lock(&mvm->mutex);
1219         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->def,
1220                                  ctx->rx_chains_static,
1221                                  ctx->rx_chains_dynamic);
1222         mutex_unlock(&mvm->mutex);
1223 }
1224
1225 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1226                                       struct ieee80211_vif *vif,
1227                                       struct ieee80211_chanctx_conf *ctx)
1228 {
1229         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1230         struct iwl_mvm_phy_ctxt *phyctx = (void *)ctx->drv_priv;
1231         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1232         int ret;
1233
1234         mutex_lock(&mvm->mutex);
1235
1236         mvmvif->phy_ctxt = phyctx;
1237
1238         switch (vif->type) {
1239         case NL80211_IFTYPE_AP:
1240                 /*
1241                  * The AP binding flow is handled as part of the start_ap flow
1242                  * (in bss_info_changed).
1243                  */
1244                 ret = 0;
1245                 goto out_unlock;
1246         case NL80211_IFTYPE_STATION:
1247         case NL80211_IFTYPE_ADHOC:
1248         case NL80211_IFTYPE_MONITOR:
1249                 break;
1250         default:
1251                 ret = -EINVAL;
1252                 goto out_unlock;
1253         }
1254
1255         ret = iwl_mvm_binding_add_vif(mvm, vif);
1256         if (ret)
1257                 goto out_unlock;
1258
1259         /*
1260          * Setting the quota at this stage is only required for monitor
1261          * interfaces. For the other types, the bss_info changed flow
1262          * will handle quota settings.
1263          */
1264         if (vif->type == NL80211_IFTYPE_MONITOR) {
1265                 mvmvif->monitor_active = true;
1266                 ret = iwl_mvm_update_quotas(mvm, vif);
1267                 if (ret)
1268                         goto out_remove_binding;
1269         }
1270
1271         goto out_unlock;
1272
1273  out_remove_binding:
1274         iwl_mvm_binding_remove_vif(mvm, vif);
1275  out_unlock:
1276         mutex_unlock(&mvm->mutex);
1277         if (ret)
1278                 mvmvif->phy_ctxt = NULL;
1279         return ret;
1280 }
1281
1282 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1283                                          struct ieee80211_vif *vif,
1284                                          struct ieee80211_chanctx_conf *ctx)
1285 {
1286         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1287         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1288
1289         mutex_lock(&mvm->mutex);
1290
1291         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1292
1293         if (vif->type == NL80211_IFTYPE_AP)
1294                 goto out_unlock;
1295
1296         switch (vif->type) {
1297         case NL80211_IFTYPE_MONITOR:
1298                 mvmvif->monitor_active = false;
1299                 iwl_mvm_update_quotas(mvm, NULL);
1300                 break;
1301         default:
1302                 break;
1303         }
1304
1305         iwl_mvm_binding_remove_vif(mvm, vif);
1306 out_unlock:
1307         mvmvif->phy_ctxt = NULL;
1308         mutex_unlock(&mvm->mutex);
1309 }
1310
1311 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1312                            struct ieee80211_sta *sta,
1313                            bool set)
1314 {
1315         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1316         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1317
1318         if (!mvm_sta || !mvm_sta->vif) {
1319                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1320                 return -EINVAL;
1321         }
1322
1323         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1324 }
1325
1326 static void iwl_mvm_mac_rssi_callback(struct ieee80211_hw *hw,
1327                                       struct ieee80211_vif *vif,
1328                                       enum ieee80211_rssi_event rssi_event)
1329 {
1330         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1331
1332         iwl_mvm_bt_rssi_event(mvm, vif, rssi_event);
1333 }
1334
1335 struct ieee80211_ops iwl_mvm_hw_ops = {
1336         .tx = iwl_mvm_mac_tx,
1337         .ampdu_action = iwl_mvm_mac_ampdu_action,
1338         .start = iwl_mvm_mac_start,
1339         .restart_complete = iwl_mvm_mac_restart_complete,
1340         .stop = iwl_mvm_mac_stop,
1341         .add_interface = iwl_mvm_mac_add_interface,
1342         .remove_interface = iwl_mvm_mac_remove_interface,
1343         .config = iwl_mvm_mac_config,
1344         .configure_filter = iwl_mvm_configure_filter,
1345         .bss_info_changed = iwl_mvm_bss_info_changed,
1346         .hw_scan = iwl_mvm_mac_hw_scan,
1347         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1348         .sta_state = iwl_mvm_mac_sta_state,
1349         .sta_notify = iwl_mvm_mac_sta_notify,
1350         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1351         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1352         .conf_tx = iwl_mvm_mac_conf_tx,
1353         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1354         .set_key = iwl_mvm_mac_set_key,
1355         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1356         .remain_on_channel = iwl_mvm_roc,
1357         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1358         .rssi_callback = iwl_mvm_mac_rssi_callback,
1359
1360         .add_chanctx = iwl_mvm_add_chanctx,
1361         .remove_chanctx = iwl_mvm_remove_chanctx,
1362         .change_chanctx = iwl_mvm_change_chanctx,
1363         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1364         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1365
1366         .start_ap = iwl_mvm_start_ap,
1367         .stop_ap = iwl_mvm_stop_ap,
1368
1369         .set_tim = iwl_mvm_set_tim,
1370
1371 #ifdef CONFIG_PM_SLEEP
1372         /* look at d3.c */
1373         .suspend = iwl_mvm_suspend,
1374         .resume = iwl_mvm_resume,
1375         .set_wakeup = iwl_mvm_set_wakeup,
1376         .set_rekey_data = iwl_mvm_set_rekey_data,
1377 #if IS_ENABLED(CONFIG_IPV6)
1378         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1379 #endif
1380         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1381 #endif
1382 };