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 - 2014 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of version 2 of the GNU General Public License as
  12  * published by the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
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  22  * USA
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  25  * in the file called COPYING.
  26  *
  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  *
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  32  *
  33  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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  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 #include "testmode.h"
  81
  82 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
  83         {
  84                 .max = 1,
  85                 .types = BIT(NL80211_IFTYPE_STATION),
  86         },
  87         {
  88                 .max = 1,
  89                 .types = BIT(NL80211_IFTYPE_AP) |
  90                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
  91                         BIT(NL80211_IFTYPE_P2P_GO),
  92         },
  93         {
  94                 .max = 1,
  95                 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
  96         },
  97 };
  98
  99 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
 100         {
 101                 .num_different_channels = 1,
 102                 .max_interfaces = 3,
 103                 .limits = iwl_mvm_limits,
 104                 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
 105         },
 106 };
 107
 108 #ifdef CONFIG_PM_SLEEP
 109 static const struct nl80211_wowlan_tcp_data_token_feature
 110 iwl_mvm_wowlan_tcp_token_feature = {
 111         .min_len = 0,
 112         .max_len = 255,
 113         .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
 114 };
 115
 116 static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
 117         .tok = &iwl_mvm_wowlan_tcp_token_feature,
 118         .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
 119                             sizeof(struct ethhdr) -
 120                             sizeof(struct iphdr) -
 121                             sizeof(struct tcphdr),
 122         .data_interval_max = 65535, /* __le16 in API */
 123         .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
 124                             sizeof(struct ethhdr) -
 125                             sizeof(struct iphdr) -
 126                             sizeof(struct tcphdr),
 127         .seq = true,
 128 };
 129 #endif
 130
 131 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
 132 {
 133         int i;
 134
 135         memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
 136         for (i = 0; i < NUM_PHY_CTX; i++) {
 137                 mvm->phy_ctxts[i].id = i;
 138                 mvm->phy_ctxts[i].ref = 0;
 139         }
 140 }
 141
 142 static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 143 {
 144         /* we create the 802.11 header and SSID element */
 145         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
 146                 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
 147         return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
 148 }
 149
 150 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
 151 {
 152         struct ieee80211_hw *hw = mvm->hw;
 153         int num_mac, ret, i;
 154
 155         /* Tell mac80211 our characteristics */
 156         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 157                     IEEE80211_HW_SPECTRUM_MGMT |
 158                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 159                     IEEE80211_HW_QUEUE_CONTROL |
 160                     IEEE80211_HW_WANT_MONITOR_VIF |
 161                     IEEE80211_HW_SUPPORTS_PS |
 162                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 163                     IEEE80211_HW_AMPDU_AGGREGATION |
 164                     IEEE80211_HW_TIMING_BEACON_ONLY |
 165                     IEEE80211_HW_CONNECTION_MONITOR |
 166                     IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
 167                     IEEE80211_HW_SUPPORTS_STATIC_SMPS;
 168
 169         hw->queues = mvm->first_agg_queue;
 170         hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
 171         hw->rate_control_algorithm = "iwl-mvm-rs";
 172
 173         /*
 174          * Enable 11w if advertised by firmware and software crypto
 175          * is not enabled (as the firmware will interpret some mgmt
 176          * packets, so enabling it with software crypto isn't safe)
 177          */
 178         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
 179             !iwlwifi_mod_params.sw_crypto)
 180                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
 181
 182         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT) {
 183                 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
 184                 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
 185                 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
 186         }
 187
 188         hw->sta_data_size = sizeof(struct iwl_mvm_sta);
 189         hw->vif_data_size = sizeof(struct iwl_mvm_vif);
 190         hw->chanctx_data_size = sizeof(u16);
 191
 192         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 193                 BIT(NL80211_IFTYPE_P2P_CLIENT) |
 194                 BIT(NL80211_IFTYPE_AP) |
 195                 BIT(NL80211_IFTYPE_P2P_GO) |
 196                 BIT(NL80211_IFTYPE_P2P_DEVICE);
 197
 198         /* IBSS has bugs in older versions */
 199         if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8)
 200                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
 201
 202         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 203         hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
 204                                        REGULATORY_DISABLE_BEACON_HINTS;
 205
 206         hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
 207         hw->wiphy->n_iface_combinations =
 208                 ARRAY_SIZE(iwl_mvm_iface_combinations);
 209
 210         hw->wiphy->max_remain_on_channel_duration = 10000;
 211         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
 212
 213         /* Extract MAC address */
 214         memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
 215         hw->wiphy->addresses = mvm->addresses;
 216         hw->wiphy->n_addresses = 1;
 217
 218         /* Extract additional MAC addresses if available */
 219         num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
 220                 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
 221
 222         for (i = 1; i < num_mac; i++) {
 223                 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
 224                        ETH_ALEN);
 225                 mvm->addresses[i].addr[5]++;
 226                 hw->wiphy->n_addresses++;
 227         }
 228
 229         iwl_mvm_reset_phy_ctxts(mvm);
 230
 231         hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
 232
 233         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
 234
 235         if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
 236                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 237                         &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
 238         if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
 239                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 240                         &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
 241
 242         hw->wiphy->hw_version = mvm->trans->hw_id;
 243
 244         if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
 245                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
 246         else
 247                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
 248
 249         if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SCHED_SCAN) {
 250                 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
 251                 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
 252                 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
 253                 /* we create the 802.11 header and zero length SSID IE. */
 254                 hw->wiphy->max_sched_scan_ie_len =
 255                                         SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
 256         }
 257
 258         hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
 259                                NL80211_FEATURE_P2P_GO_OPPPS |
 260                                NL80211_FEATURE_LOW_PRIORITY_SCAN;
 261
 262         mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 263
 264         /* currently FW API supports only one optional cipher scheme */
 265         if (mvm->fw->cs->cipher) {
 266                 mvm->hw->n_cipher_schemes = 1;
 267                 mvm->hw->cipher_schemes = mvm->fw->cs;
 268         }
 269
 270 #ifdef CONFIG_PM_SLEEP
 271         if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
 272             mvm->trans->ops->d3_suspend &&
 273             mvm->trans->ops->d3_resume &&
 274             device_can_wakeup(mvm->trans->dev)) {
 275                 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
 276                                     WIPHY_WOWLAN_DISCONNECT |
 277                                     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
 278                                     WIPHY_WOWLAN_RFKILL_RELEASE;
 279                 if (!iwlwifi_mod_params.sw_crypto)
 280                         mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
 281                                              WIPHY_WOWLAN_GTK_REKEY_FAILURE |
 282                                              WIPHY_WOWLAN_4WAY_HANDSHAKE;
 283
 284                 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
 285                 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
 286                 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
 287                 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
 288                 hw->wiphy->wowlan = &mvm->wowlan;
 289         }
 290 #endif
 291
 292         ret = iwl_mvm_leds_init(mvm);
 293         if (ret)
 294                 return ret;
 295
 296         ret = ieee80211_register_hw(mvm->hw);
 297         if (ret)
 298                 iwl_mvm_leds_exit(mvm);
 299
 300         return ret;
 301 }
 302
 303 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
 304                            struct ieee80211_tx_control *control,
 305                            struct sk_buff *skb)
 306 {
 307         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 308
 309         if (iwl_mvm_is_radio_killed(mvm)) {
 310                 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
 311                 goto drop;
 312         }
 313
 314         if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
 315             !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
 316                 goto drop;
 317
 318         if (control->sta) {
 319                 if (iwl_mvm_tx_skb(mvm, skb, control->sta))
 320                         goto drop;
 321                 return;
 322         }
 323
 324         if (iwl_mvm_tx_skb_non_sta(mvm, skb))
 325                 goto drop;
 326         return;
 327  drop:
 328         ieee80211_free_txskb(hw, skb);
 329 }
 330
 331 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
 332                                     struct ieee80211_vif *vif,
 333                                     enum ieee80211_ampdu_mlme_action action,
 334                                     struct ieee80211_sta *sta, u16 tid,
 335                                     u16 *ssn, u8 buf_size)
 336 {
 337         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 338         int ret;
 339
 340         IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
 341                      sta->addr, tid, action);
 342
 343         if (!(mvm->nvm_data->sku_cap_11n_enable))
 344                 return -EACCES;
 345
 346         mutex_lock(&mvm->mutex);
 347
 348         switch (action) {
 349         case IEEE80211_AMPDU_RX_START:
 350                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG) {
 351                         ret = -EINVAL;
 352                         break;
 353                 }
 354                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
 355                 break;
 356         case IEEE80211_AMPDU_RX_STOP:
 357                 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
 358                 break;
 359         case IEEE80211_AMPDU_TX_START:
 360                 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG) {
 361                         ret = -EINVAL;
 362                         break;
 363                 }
 364                 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
 365                 break;
 366         case IEEE80211_AMPDU_TX_STOP_CONT:
 367                 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
 368                 break;
 369         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 370         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 371                 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
 372                 break;
 373         case IEEE80211_AMPDU_TX_OPERATIONAL:
 374                 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
 375                 break;
 376         default:
 377                 WARN_ON_ONCE(1);
 378                 ret = -EINVAL;
 379                 break;
 380         }
 381         mutex_unlock(&mvm->mutex);
 382
 383         return ret;
 384 }
 385
 386 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
 387                                      struct ieee80211_vif *vif)
 388 {
 389         struct iwl_mvm *mvm = data;
 390         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 391
 392         mvmvif->uploaded = false;
 393         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 394
 395         /* does this make sense at all? */
 396         mvmvif->color++;
 397
 398         spin_lock_bh(&mvm->time_event_lock);
 399         iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
 400         spin_unlock_bh(&mvm->time_event_lock);
 401
 402         mvmvif->phy_ctxt = NULL;
 403 }
 404
 405 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
 406 {
 407         iwl_trans_stop_device(mvm->trans);
 408
 409         mvm->scan_status = IWL_MVM_SCAN_NONE;
 410
 411         /* just in case one was running */
 412         ieee80211_remain_on_channel_expired(mvm->hw);
 413
 414         ieee80211_iterate_active_interfaces_atomic(
 415                 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 416                 iwl_mvm_cleanup_iterator, mvm);
 417
 418         mvm->p2p_device_vif = NULL;
 419
 420         iwl_mvm_reset_phy_ctxts(mvm);
 421         memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
 422         memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
 423
 424         ieee80211_wake_queues(mvm->hw);
 425
 426         mvm->vif_count = 0;
 427         mvm->rx_ba_sessions = 0;
 428 }
 429
 430 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
 431 {
 432         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 433         int ret;
 434
 435         mutex_lock(&mvm->mutex);
 436
 437         /* Clean up some internal and mac80211 state on restart */
 438         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
 439                 iwl_mvm_restart_cleanup(mvm);
 440
 441         ret = iwl_mvm_up(mvm);
 442         mutex_unlock(&mvm->mutex);
 443
 444         return ret;
 445 }
 446
 447 static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
 448 {
 449         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 450         int ret;
 451
 452         mutex_lock(&mvm->mutex);
 453
 454         clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
 455         ret = iwl_mvm_update_quotas(mvm, NULL);
 456         if (ret)
 457                 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
 458                         ret);
 459
 460         mutex_unlock(&mvm->mutex);
 461 }
 462
 463 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
 464 {
 465         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 466
 467         flush_work(&mvm->async_handlers_wk);
 468
 469         mutex_lock(&mvm->mutex);
 470         /* async_handlers_wk is now blocked */
 471
 472         /*
 473          * The work item could be running or queued if the
 474          * ROC time event stops just as we get here.
 475          */
 476         cancel_work_sync(&mvm->roc_done_wk);
 477
 478         iwl_trans_stop_device(mvm->trans);
 479
 480         iwl_mvm_async_handlers_purge(mvm);
 481         /* async_handlers_list is empty and will stay empty: HW is stopped */
 482
 483         /* the fw is stopped, the aux sta is dead: clean up driver state */
 484         iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
 485
 486         mutex_unlock(&mvm->mutex);
 487
 488         /*
 489          * The worker might have been waiting for the mutex, let it run and
 490          * discover that its list is now empty.
 491          */
 492         cancel_work_sync(&mvm->async_handlers_wk);
 493 }
 494
 495 static void iwl_mvm_power_update_iterator(void *data, u8 *mac,
 496                                           struct ieee80211_vif *vif)
 497 {
 498         struct iwl_mvm *mvm = data;
 499
 500         iwl_mvm_power_update_mode(mvm, vif);
 501 }
 502
 503 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
 504 {
 505         u16 i;
 506
 507         lockdep_assert_held(&mvm->mutex);
 508
 509         for (i = 0; i < NUM_PHY_CTX; i++)
 510                 if (!mvm->phy_ctxts[i].ref)
 511                         return &mvm->phy_ctxts[i];
 512
 513         IWL_ERR(mvm, "No available PHY context\n");
 514         return NULL;
 515 }
 516
 517 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 518                                 s8 tx_power)
 519 {
 520         /* FW is in charge of regulatory enforcement */
 521         struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
 522                 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
 523                 .pwr_restriction = cpu_to_le16(tx_power),
 524         };
 525
 526         return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, CMD_SYNC,
 527                                     sizeof(reduce_txpwr_cmd),
 528                                     &reduce_txpwr_cmd);
 529 }
 530
 531 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 532                                      struct ieee80211_vif *vif)
 533 {
 534         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 535         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 536         int ret;
 537
 538         /*
 539          * Not much to do here. The stack will not allow interface
 540          * types or combinations that we didn't advertise, so we
 541          * don't really have to check the types.
 542          */
 543
 544         mutex_lock(&mvm->mutex);
 545
 546         /* Allocate resources for the MAC context, and add it to the fw  */
 547         ret = iwl_mvm_mac_ctxt_init(mvm, vif);
 548         if (ret)
 549                 goto out_unlock;
 550
 551         /* Counting number of interfaces is needed for legacy PM */
 552         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 553                 mvm->vif_count++;
 554
 555         /*
 556          * The AP binding flow can be done only after the beacon
 557          * template is configured (which happens only in the mac80211
 558          * start_ap() flow), and adding the broadcast station can happen
 559          * only after the binding.
 560          * In addition, since modifying the MAC before adding a bcast
 561          * station is not allowed by the FW, delay the adding of MAC context to
 562          * the point where we can also add the bcast station.
 563          * In short: there's not much we can do at this point, other than
 564          * allocating resources :)
 565          */
 566         if (vif->type == NL80211_IFTYPE_AP ||
 567             vif->type == NL80211_IFTYPE_ADHOC) {
 568                 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
 569                 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
 570                                                qmask);
 571                 if (ret) {
 572                         IWL_ERR(mvm, "Failed to allocate bcast sta\n");
 573                         goto out_release;
 574                 }
 575
 576                 iwl_mvm_vif_dbgfs_register(mvm, vif);
 577                 goto out_unlock;
 578         }
 579
 580         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 581         if (ret)
 582                 goto out_release;
 583
 584         iwl_mvm_power_disable(mvm, vif);
 585
 586         /* beacon filtering */
 587         ret = iwl_mvm_disable_beacon_filter(mvm, vif);
 588         if (ret)
 589                 goto out_remove_mac;
 590
 591         if (!mvm->bf_allowed_vif &&
 592             vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
 593             mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BF_UPDATED){
 594                 mvm->bf_allowed_vif = mvmvif;
 595                 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 596                                      IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 597         }
 598
 599         /*
 600          * P2P_DEVICE interface does not have a channel context assigned to it,
 601          * so a dedicated PHY context is allocated to it and the corresponding
 602          * MAC context is bound to it at this stage.
 603          */
 604         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 605
 606                 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
 607                 if (!mvmvif->phy_ctxt) {
 608                         ret = -ENOSPC;
 609                         goto out_free_bf;
 610                 }
 611
 612                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
 613                 ret = iwl_mvm_binding_add_vif(mvm, vif);
 614                 if (ret)
 615                         goto out_unref_phy;
 616
 617                 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
 618                 if (ret)
 619                         goto out_unbind;
 620
 621                 /* Save a pointer to p2p device vif, so it can later be used to
 622                  * update the p2p device MAC when a GO is started/stopped */
 623                 mvm->p2p_device_vif = vif;
 624         }
 625
 626         iwl_mvm_vif_dbgfs_register(mvm, vif);
 627         goto out_unlock;
 628
 629  out_unbind:
 630         iwl_mvm_binding_remove_vif(mvm, vif);
 631  out_unref_phy:
 632         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 633  out_free_bf:
 634         if (mvm->bf_allowed_vif == mvmvif) {
 635                 mvm->bf_allowed_vif = NULL;
 636                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 637                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 638         }
 639  out_remove_mac:
 640         mvmvif->phy_ctxt = NULL;
 641         iwl_mvm_mac_ctxt_remove(mvm, vif);
 642  out_release:
 643         if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
 644                 mvm->vif_count--;
 645
 646         /* TODO: remove this when legacy PM will be discarded */
 647         ieee80211_iterate_active_interfaces(
 648                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 649                 iwl_mvm_power_update_iterator, mvm);
 650
 651         iwl_mvm_mac_ctxt_release(mvm, vif);
 652  out_unlock:
 653         mutex_unlock(&mvm->mutex);
 654
 655         return ret;
 656 }
 657
 658 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
 659                                         struct ieee80211_vif *vif)
 660 {
 661         u32 tfd_msk = 0, ac;
 662
 663         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 664                 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
 665                         tfd_msk |= BIT(vif->hw_queue[ac]);
 666
 667         if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
 668                 tfd_msk |= BIT(vif->cab_queue);
 669
 670         if (tfd_msk) {
 671                 mutex_lock(&mvm->mutex);
 672                 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
 673                 mutex_unlock(&mvm->mutex);
 674         }
 675
 676         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 677                 /*
 678                  * Flush the ROC worker which will flush the OFFCHANNEL queue.
 679                  * We assume here that all the packets sent to the OFFCHANNEL
 680                  * queue are sent in ROC session.
 681                  */
 682                 flush_work(&mvm->roc_done_wk);
 683         } else {
 684                 /*
 685                  * By now, all the AC queues are empty. The AGG queues are
 686                  * empty too. We already got all the Tx responses for all the
 687                  * packets in the queues. The drain work can have been
 688                  * triggered. Flush it.
 689                  */
 690                 flush_work(&mvm->sta_drained_wk);
 691         }
 692 }
 693
 694 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 695                                          struct ieee80211_vif *vif)
 696 {
 697         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 698         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 699
 700         iwl_mvm_prepare_mac_removal(mvm, vif);
 701
 702         mutex_lock(&mvm->mutex);
 703
 704         if (mvm->bf_allowed_vif == mvmvif) {
 705                 mvm->bf_allowed_vif = NULL;
 706                 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
 707                                        IEEE80211_VIF_SUPPORTS_CQM_RSSI);
 708         }
 709
 710         iwl_mvm_vif_dbgfs_clean(mvm, vif);
 711
 712         /*
 713          * For AP/GO interface, the tear down of the resources allocated to the
 714          * interface is be handled as part of the stop_ap flow.
 715          */
 716         if (vif->type == NL80211_IFTYPE_AP ||
 717             vif->type == NL80211_IFTYPE_ADHOC) {
 718 #ifdef CONFIG_NL80211_TESTMODE
 719                 if (vif == mvm->noa_vif) {
 720                         mvm->noa_vif = NULL;
 721                         mvm->noa_duration = 0;
 722                 }
 723 #endif
 724                 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
 725                 goto out_release;
 726         }
 727
 728         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
 729                 mvm->p2p_device_vif = NULL;
 730                 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
 731                 iwl_mvm_binding_remove_vif(mvm, vif);
 732                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
 733                 mvmvif->phy_ctxt = NULL;
 734         }
 735
 736         if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
 737                 mvm->vif_count--;
 738
 739         /* TODO: remove this when legacy PM will be discarded */
 740         ieee80211_iterate_active_interfaces(
 741                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 742                 iwl_mvm_power_update_iterator, mvm);
 743
 744         iwl_mvm_mac_ctxt_remove(mvm, vif);
 745
 746 out_release:
 747         iwl_mvm_mac_ctxt_release(mvm, vif);
 748         mutex_unlock(&mvm->mutex);
 749 }
 750
 751 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
 752 {
 753         return 0;
 754 }
 755
 756 struct iwl_mvm_mc_iter_data {
 757         struct iwl_mvm *mvm;
 758         int port_id;
 759 };
 760
 761 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
 762                                       struct ieee80211_vif *vif)
 763 {
 764         struct iwl_mvm_mc_iter_data *data = _data;
 765         struct iwl_mvm *mvm = data->mvm;
 766         struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
 767         int ret, len;
 768
 769         /* if we don't have free ports, mcast frames will be dropped */
 770         if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
 771                 return;
 772
 773         if (vif->type != NL80211_IFTYPE_STATION ||
 774             !vif->bss_conf.assoc)
 775                 return;
 776
 777         cmd->port_id = data->port_id++;
 778         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
 779         len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
 780
 781         ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_SYNC, len, cmd);
 782         if (ret)
 783                 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
 784 }
 785
 786 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
 787 {
 788         struct iwl_mvm_mc_iter_data iter_data = {
 789                 .mvm = mvm,
 790         };
 791
 792         lockdep_assert_held(&mvm->mutex);
 793
 794         if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
 795                 return;
 796
 797         ieee80211_iterate_active_interfaces(
 798                 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
 799                 iwl_mvm_mc_iface_iterator, &iter_data);
 800 }
 801
 802 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
 803                                      struct netdev_hw_addr_list *mc_list)
 804 {
 805         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 806         struct iwl_mcast_filter_cmd *cmd;
 807         struct netdev_hw_addr *addr;
 808         int addr_count = netdev_hw_addr_list_count(mc_list);
 809         bool pass_all = false;
 810         int len;
 811
 812         if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
 813                 pass_all = true;
 814                 addr_count = 0;
 815         }
 816
 817         len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
 818         cmd = kzalloc(len, GFP_ATOMIC);
 819         if (!cmd)
 820                 return 0;
 821
 822         if (pass_all) {
 823                 cmd->pass_all = 1;
 824                 return (u64)(unsigned long)cmd;
 825         }
 826
 827         netdev_hw_addr_list_for_each(addr, mc_list) {
 828                 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
 829                                    cmd->count, addr->addr);
 830                 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
 831                        addr->addr, ETH_ALEN);
 832                 cmd->count++;
 833         }
 834
 835         return (u64)(unsigned long)cmd;
 836 }
 837
 838 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
 839                                      unsigned int changed_flags,
 840                                      unsigned int *total_flags,
 841                                      u64 multicast)
 842 {
 843         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 844         struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
 845
 846         mutex_lock(&mvm->mutex);
 847
 848         /* replace previous configuration */
 849         kfree(mvm->mcast_filter_cmd);
 850         mvm->mcast_filter_cmd = cmd;
 851
 852         if (!cmd)
 853                 goto out;
 854
 855         iwl_mvm_recalc_multicast(mvm);
 856 out:
 857         mutex_unlock(&mvm->mutex);
 858         *total_flags = 0;
 859 }
 860
 861 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
 862                                              struct ieee80211_vif *vif,
 863                                              struct ieee80211_bss_conf *bss_conf,
 864                                              u32 changes)
 865 {
 866         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 867         int ret;
 868
 869         /*
 870          * Re-calculate the tsf id, as the master-slave relations depend on the
 871          * beacon interval, which was not known when the station interface was
 872          * added.
 873          */
 874         if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
 875                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
 876
 877         ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
 878         if (ret)
 879                 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 880
 881         if (changes & BSS_CHANGED_ASSOC) {
 882                 if (bss_conf->assoc) {
 883                         /* add quota for this interface */
 884                         ret = iwl_mvm_update_quotas(mvm, vif);
 885                         if (ret) {
 886                                 IWL_ERR(mvm, "failed to update quotas\n");
 887                                 return;
 888                         }
 889
 890                         if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
 891                                      &mvm->status)) {
 892                                 /*
 893                                  * If we're restarting then the firmware will
 894                                  * obviously have lost synchronisation with
 895                                  * the AP. It will attempt to synchronise by
 896                                  * itself, but we can make it more reliable by
 897                                  * scheduling a session protection time event.
 898                                  *
 899                                  * The firmware needs to receive a beacon to
 900                                  * catch up with synchronisation, use 110% of
 901                                  * the beacon interval.
 902                                  *
 903                                  * Set a large maximum delay to allow for more
 904                                  * than a single interface.
 905                                  */
 906                                 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
 907                                 iwl_mvm_protect_session(mvm, vif, dur, dur,
 908                                                         5 * dur);
 909                         }
 910
 911                         iwl_mvm_sf_update(mvm, vif, false);
 912                         iwl_mvm_power_vif_assoc(mvm, vif);
 913                 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
 914                         /*
 915                          * If update fails - SF might be running in associated
 916                          * mode while disassociated - which is forbidden.
 917                          */
 918                         WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
 919                                   "Failed to update SF upon disassociation\n");
 920
 921                         /* remove AP station now that the MAC is unassoc */
 922                         ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
 923                         if (ret)
 924                                 IWL_ERR(mvm, "failed to remove AP station\n");
 925                         mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
 926                         /* remove quota for this interface */
 927                         ret = iwl_mvm_update_quotas(mvm, NULL);
 928                         if (ret)
 929                                 IWL_ERR(mvm, "failed to update quotas\n");
 930                 }
 931
 932                 iwl_mvm_recalc_multicast(mvm);
 933
 934                 /* reset rssi values */
 935                 mvmvif->bf_data.ave_beacon_signal = 0;
 936
 937                 if (!(mvm->fw->ucode_capa.flags &
 938                                         IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)) {
 939                         /* Workaround for FW bug, otherwise FW disables device
 940                          * power save upon disassociation
 941                          */
 942                         ret = iwl_mvm_power_update_mode(mvm, vif);
 943                         if (ret)
 944                                 IWL_ERR(mvm, "failed to update power mode\n");
 945                 }
 946                 iwl_mvm_bt_coex_vif_change(mvm);
 947         } else if (changes & BSS_CHANGED_BEACON_INFO) {
 948                 /*
 949                  * We received a beacon _after_ association so
 950                  * remove the session protection.
 951                  */
 952                 iwl_mvm_remove_time_event(mvm, mvmvif,
 953                                           &mvmvif->time_event_data);
 954         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
 955                               BSS_CHANGED_QOS)) {
 956                 ret = iwl_mvm_power_update_mode(mvm, vif);
 957                 if (ret)
 958                         IWL_ERR(mvm, "failed to update power mode\n");
 959         }
 960         if (changes & BSS_CHANGED_TXPOWER) {
 961                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
 962                                 bss_conf->txpower);
 963                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
 964         }
 965
 966         if (changes & BSS_CHANGED_CQM) {
 967                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
 968                 /* reset cqm events tracking */
 969                 mvmvif->bf_data.last_cqm_event = 0;
 970                 ret = iwl_mvm_update_beacon_filter(mvm, vif);
 971                 if (ret)
 972                         IWL_ERR(mvm, "failed to update CQM thresholds\n");
 973         }
 974 }
 975
 976 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 977                                  struct ieee80211_vif *vif)
 978 {
 979         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 980         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 981         int ret;
 982
 983         mutex_lock(&mvm->mutex);
 984
 985         /* Send the beacon template */
 986         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 987         if (ret)
 988                 goto out_unlock;
 989
 990         /*
 991          * Re-calculate the tsf id, as the master-slave relations depend on the
 992          * beacon interval, which was not known when the AP interface was added.
 993          */
 994         if (vif->type == NL80211_IFTYPE_AP)
 995                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
 996
 997         /* Add the mac context */
 998         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
 999         if (ret)
1000                 goto out_unlock;
1001
1002         /* Perform the binding */
1003         ret = iwl_mvm_binding_add_vif(mvm, vif);
1004         if (ret)
1005                 goto out_remove;
1006
1007         mvmvif->ap_ibss_active = true;
1008
1009         /* Send the bcast station. At this stage the TBTT and DTIM time events
1010          * are added and applied to the scheduler */
1011         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1012         if (ret)
1013                 goto out_unbind;
1014
1015         ret = iwl_mvm_update_quotas(mvm, vif);
1016         if (ret)
1017                 goto out_rm_bcast;
1018
1019         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1020         if (vif->p2p && mvm->p2p_device_vif)
1021                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1022
1023         iwl_mvm_bt_coex_vif_change(mvm);
1024
1025         mutex_unlock(&mvm->mutex);
1026         return 0;
1027
1028 out_rm_bcast:
1029         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1030 out_unbind:
1031         iwl_mvm_binding_remove_vif(mvm, vif);
1032 out_remove:
1033         iwl_mvm_mac_ctxt_remove(mvm, vif);
1034 out_unlock:
1035         mutex_unlock(&mvm->mutex);
1036         return ret;
1037 }
1038
1039 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1040                                  struct ieee80211_vif *vif)
1041 {
1042         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1043         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1044
1045         iwl_mvm_prepare_mac_removal(mvm, vif);
1046
1047         mutex_lock(&mvm->mutex);
1048
1049         mvmvif->ap_ibss_active = false;
1050
1051         iwl_mvm_bt_coex_vif_change(mvm);
1052
1053         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1054         if (vif->p2p && mvm->p2p_device_vif)
1055                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1056
1057         iwl_mvm_update_quotas(mvm, NULL);
1058         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1059         iwl_mvm_binding_remove_vif(mvm, vif);
1060         iwl_mvm_mac_ctxt_remove(mvm, vif);
1061
1062         mutex_unlock(&mvm->mutex);
1063 }
1064
1065 static void
1066 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1067                                  struct ieee80211_vif *vif,
1068                                  struct ieee80211_bss_conf *bss_conf,
1069                                  u32 changes)
1070 {
1071         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1072         enum ieee80211_bss_change ht_change = BSS_CHANGED_ERP_CTS_PROT |
1073                                               BSS_CHANGED_HT |
1074                                               BSS_CHANGED_BANDWIDTH;
1075         int ret;
1076
1077         /* Changes will be applied when the AP/IBSS is started */
1078         if (!mvmvif->ap_ibss_active)
1079                 return;
1080
1081         if (changes & ht_change) {
1082                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1083                 if (ret)
1084                         IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1085         }
1086
1087         /* Need to send a new beacon template to the FW */
1088         if (changes & BSS_CHANGED_BEACON) {
1089                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1090                         IWL_WARN(mvm, "Failed updating beacon data\n");
1091         }
1092 }
1093
1094 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1095                                      struct ieee80211_vif *vif,
1096                                      struct ieee80211_bss_conf *bss_conf,
1097                                      u32 changes)
1098 {
1099         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1100
1101         mutex_lock(&mvm->mutex);
1102
1103         switch (vif->type) {
1104         case NL80211_IFTYPE_STATION:
1105                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1106                 break;
1107         case NL80211_IFTYPE_AP:
1108         case NL80211_IFTYPE_ADHOC:
1109                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1110                 break;
1111         default:
1112                 /* shouldn't happen */
1113                 WARN_ON_ONCE(1);
1114         }
1115
1116         mutex_unlock(&mvm->mutex);
1117 }
1118
1119 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1120                                struct ieee80211_vif *vif,
1121                                struct cfg80211_scan_request *req)
1122 {
1123         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1124         int ret;
1125
1126         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1127                 return -EINVAL;
1128
1129         mutex_lock(&mvm->mutex);
1130
1131         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
1132                 ret = iwl_mvm_scan_request(mvm, vif, req);
1133         else
1134                 ret = -EBUSY;
1135
1136         mutex_unlock(&mvm->mutex);
1137
1138         return ret;
1139 }
1140
1141 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1142                                        struct ieee80211_vif *vif)
1143 {
1144         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1145
1146         mutex_lock(&mvm->mutex);
1147
1148         iwl_mvm_cancel_scan(mvm);
1149
1150         mutex_unlock(&mvm->mutex);
1151 }
1152
1153 static void
1154 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1155                                   struct ieee80211_sta *sta, u16 tid,
1156                                   int num_frames,
1157                                   enum ieee80211_frame_release_type reason,
1158                                   bool more_data)
1159 {
1160         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1161
1162         /* TODO: how do we tell the fw to send frames for a specific TID */
1163
1164         /*
1165          * The fw will send EOSP notification when the last frame will be
1166          * transmitted.
1167          */
1168         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
1169 }
1170
1171 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1172                                    struct ieee80211_vif *vif,
1173                                    enum sta_notify_cmd cmd,
1174                                    struct ieee80211_sta *sta)
1175 {
1176         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1177         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1178
1179         switch (cmd) {
1180         case STA_NOTIFY_SLEEP:
1181                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1182                         ieee80211_sta_block_awake(hw, sta, true);
1183                 /*
1184                  * The fw updates the STA to be asleep. Tx packets on the Tx
1185                  * queues to this station will not be transmitted. The fw will
1186                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1187                  */
1188                 break;
1189         case STA_NOTIFY_AWAKE:
1190                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1191                         break;
1192                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1193                 break;
1194         default:
1195                 break;
1196         }
1197 }
1198
1199 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1200                                        struct ieee80211_vif *vif,
1201                                        struct ieee80211_sta *sta)
1202 {
1203         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1204         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1205
1206         /*
1207          * This is called before mac80211 does RCU synchronisation,
1208          * so here we already invalidate our internal RCU-protected
1209          * station pointer. The rest of the code will thus no longer
1210          * be able to find the station this way, and we don't rely
1211          * on further RCU synchronisation after the sta_state()
1212          * callback deleted the station.
1213          */
1214         mutex_lock(&mvm->mutex);
1215         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1216                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1217                                    ERR_PTR(-ENOENT));
1218         mutex_unlock(&mvm->mutex);
1219 }
1220
1221 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1222                                  struct ieee80211_vif *vif,
1223                                  struct ieee80211_sta *sta,
1224                                  enum ieee80211_sta_state old_state,
1225                                  enum ieee80211_sta_state new_state)
1226 {
1227         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1228         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1229         int ret;
1230
1231         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1232                            sta->addr, old_state, new_state);
1233
1234         /* this would be a mac80211 bug ... but don't crash */
1235         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1236                 return -EINVAL;
1237
1238         /* if a STA is being removed, reuse its ID */
1239         flush_work(&mvm->sta_drained_wk);
1240
1241         mutex_lock(&mvm->mutex);
1242         if (old_state == IEEE80211_STA_NOTEXIST &&
1243             new_state == IEEE80211_STA_NONE) {
1244                 /*
1245                  * Firmware bug - it'll crash if the beacon interval is less
1246                  * than 16. We can't avoid connecting at all, so refuse the
1247                  * station state change, this will cause mac80211 to abandon
1248                  * attempts to connect to this AP, and eventually wpa_s will
1249                  * blacklist the AP...
1250                  */
1251                 if (vif->type == NL80211_IFTYPE_STATION &&
1252                     vif->bss_conf.beacon_int < 16) {
1253                         IWL_ERR(mvm,
1254                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1255                                 sta->addr, vif->bss_conf.beacon_int);
1256                         ret = -EINVAL;
1257                         goto out_unlock;
1258                 }
1259                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1260         } else if (old_state == IEEE80211_STA_NONE &&
1261                    new_state == IEEE80211_STA_AUTH) {
1262                 ret = 0;
1263         } else if (old_state == IEEE80211_STA_AUTH &&
1264                    new_state == IEEE80211_STA_ASSOC) {
1265                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1266                 if (ret == 0)
1267                         iwl_mvm_rs_rate_init(mvm, sta,
1268                                              mvmvif->phy_ctxt->channel->band,
1269                                              true);
1270         } else if (old_state == IEEE80211_STA_ASSOC &&
1271                    new_state == IEEE80211_STA_AUTHORIZED) {
1272                 /* enable beacon filtering */
1273                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1274                 ret = 0;
1275         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1276                    new_state == IEEE80211_STA_ASSOC) {
1277                 /* disable beacon filtering */
1278                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1279                 ret = 0;
1280         } else if (old_state == IEEE80211_STA_ASSOC &&
1281                    new_state == IEEE80211_STA_AUTH) {
1282                 ret = 0;
1283         } else if (old_state == IEEE80211_STA_AUTH &&
1284                    new_state == IEEE80211_STA_NONE) {
1285                 ret = 0;
1286         } else if (old_state == IEEE80211_STA_NONE &&
1287                    new_state == IEEE80211_STA_NOTEXIST) {
1288                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1289         } else {
1290                 ret = -EIO;
1291         }
1292  out_unlock:
1293         mutex_unlock(&mvm->mutex);
1294
1295         return ret;
1296 }
1297
1298 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1299 {
1300         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1301
1302         mvm->rts_threshold = value;
1303
1304         return 0;
1305 }
1306
1307 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1308                                   struct ieee80211_vif *vif,
1309                                   struct ieee80211_sta *sta, u32 changed)
1310 {
1311         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1312
1313         if (vif->type == NL80211_IFTYPE_STATION &&
1314             changed & IEEE80211_RC_NSS_CHANGED)
1315                 iwl_mvm_sf_update(mvm, vif, false);
1316 }
1317
1318 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1319                                struct ieee80211_vif *vif, u16 ac,
1320                                const struct ieee80211_tx_queue_params *params)
1321 {
1322         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1323         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1324
1325         mvmvif->queue_params[ac] = *params;
1326
1327         /*
1328          * No need to update right away, we'll get BSS_CHANGED_QOS
1329          * The exception is P2P_DEVICE interface which needs immediate update.
1330          */
1331         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1332                 int ret;
1333
1334                 mutex_lock(&mvm->mutex);
1335                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1336                 mutex_unlock(&mvm->mutex);
1337                 return ret;
1338         }
1339         return 0;
1340 }
1341
1342 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1343                                       struct ieee80211_vif *vif)
1344 {
1345         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1346         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1347                            200 + vif->bss_conf.beacon_int);
1348         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1349                                100 + vif->bss_conf.beacon_int);
1350
1351         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1352                 return;
1353
1354         mutex_lock(&mvm->mutex);
1355         /* Try really hard to protect the session and hear a beacon */
1356         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1357         mutex_unlock(&mvm->mutex);
1358 }
1359
1360 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1361                                         struct ieee80211_vif *vif,
1362                                         struct cfg80211_sched_scan_request *req,
1363                                         struct ieee80211_sched_scan_ies *ies)
1364 {
1365         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1366         int ret;
1367
1368         mutex_lock(&mvm->mutex);
1369
1370         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1371                 IWL_DEBUG_SCAN(mvm,
1372                                "SCHED SCAN request during internal scan - abort\n");
1373                 ret = -EBUSY;
1374                 goto out;
1375         }
1376
1377         mvm->scan_status = IWL_MVM_SCAN_SCHED;
1378
1379         ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1380         if (ret)
1381                 goto err;
1382
1383         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1384         if (ret)
1385                 goto err;
1386
1387         ret = iwl_mvm_sched_scan_start(mvm, req);
1388         if (!ret)
1389                 goto out;
1390 err:
1391         mvm->scan_status = IWL_MVM_SCAN_NONE;
1392 out:
1393         mutex_unlock(&mvm->mutex);
1394         return ret;
1395 }
1396
1397 static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1398                                         struct ieee80211_vif *vif)
1399 {
1400         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1401
1402         mutex_lock(&mvm->mutex);
1403         iwl_mvm_sched_scan_stop(mvm);
1404         mutex_unlock(&mvm->mutex);
1405 }
1406
1407 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1408                                enum set_key_cmd cmd,
1409                                struct ieee80211_vif *vif,
1410                                struct ieee80211_sta *sta,
1411                                struct ieee80211_key_conf *key)
1412 {
1413         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1414         int ret;
1415
1416         if (iwlwifi_mod_params.sw_crypto) {
1417                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1418                 return -EOPNOTSUPP;
1419         }
1420
1421         switch (key->cipher) {
1422         case WLAN_CIPHER_SUITE_TKIP:
1423                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1424                 /* fall-through */
1425         case WLAN_CIPHER_SUITE_CCMP:
1426                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1427                 break;
1428         case WLAN_CIPHER_SUITE_AES_CMAC:
1429                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1430                 break;
1431         case WLAN_CIPHER_SUITE_WEP40:
1432         case WLAN_CIPHER_SUITE_WEP104:
1433                 /*
1434                  * Support for TX only, at least for now, so accept
1435                  * the key and do nothing else. Then mac80211 will
1436                  * pass it for TX but we don't have to use it for RX.
1437                  */
1438                 return 0;
1439         default:
1440                 /* currently FW supports only one optional cipher scheme */
1441                 if (hw->n_cipher_schemes &&
1442                     hw->cipher_schemes->cipher == key->cipher)
1443                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1444                 else
1445                         return -EOPNOTSUPP;
1446         }
1447
1448         mutex_lock(&mvm->mutex);
1449
1450         switch (cmd) {
1451         case SET_KEY:
1452                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1453                      vif->type == NL80211_IFTYPE_AP) && !sta) {
1454                         /*
1455                          * GTK on AP interface is a TX-only key, return 0;
1456                          * on IBSS they're per-station and because we're lazy
1457                          * we don't support them for RX, so do the same.
1458                          */
1459                         ret = 0;
1460                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1461                         break;
1462                 }
1463
1464                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1465                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1466                 if (ret) {
1467                         IWL_WARN(mvm, "set key failed\n");
1468                         /*
1469                          * can't add key for RX, but we don't need it
1470                          * in the device for TX so still return 0
1471                          */
1472                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1473                         ret = 0;
1474                 }
1475
1476                 break;
1477         case DISABLE_KEY:
1478                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1479                         ret = 0;
1480                         break;
1481                 }
1482
1483                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1484                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1485                 break;
1486         default:
1487                 ret = -EINVAL;
1488         }
1489
1490         mutex_unlock(&mvm->mutex);
1491         return ret;
1492 }
1493
1494 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1495                                         struct ieee80211_vif *vif,
1496                                         struct ieee80211_key_conf *keyconf,
1497                                         struct ieee80211_sta *sta,
1498                                         u32 iv32, u16 *phase1key)
1499 {
1500         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1501
1502         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1503                 return;
1504
1505         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1506 }
1507
1508
1509 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1510                        struct ieee80211_vif *vif,
1511                        struct ieee80211_channel *channel,
1512                        int duration,
1513                        enum ieee80211_roc_type type)
1514 {
1515         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1516         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1517         struct cfg80211_chan_def chandef;
1518         struct iwl_mvm_phy_ctxt *phy_ctxt;
1519         int ret, i;
1520
1521         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1522                            duration, type);
1523
1524         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1525                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1526                 return -EINVAL;
1527         }
1528
1529         mutex_lock(&mvm->mutex);
1530
1531         for (i = 0; i < NUM_PHY_CTX; i++) {
1532                 phy_ctxt = &mvm->phy_ctxts[i];
1533                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1534                         continue;
1535
1536                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1537                         /*
1538                          * Unbind the P2P_DEVICE from the current PHY context,
1539                          * and if the PHY context is not used remove it.
1540                          */
1541                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
1542                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1543                                 goto out_unlock;
1544
1545                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1546
1547                         /* Bind the P2P_DEVICE to the current PHY Context */
1548                         mvmvif->phy_ctxt = phy_ctxt;
1549
1550                         ret = iwl_mvm_binding_add_vif(mvm, vif);
1551                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1552                                 goto out_unlock;
1553
1554                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1555                         goto schedule_time_event;
1556                 }
1557         }
1558
1559         /* Need to update the PHY context only if the ROC channel changed */
1560         if (channel == mvmvif->phy_ctxt->channel)
1561                 goto schedule_time_event;
1562
1563         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1564
1565         /*
1566          * Change the PHY context configuration as it is currently referenced
1567          * only by the P2P Device MAC
1568          */
1569         if (mvmvif->phy_ctxt->ref == 1) {
1570                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1571                                                &chandef, 1, 1);
1572                 if (ret)
1573                         goto out_unlock;
1574         } else {
1575                 /*
1576                  * The PHY context is shared with other MACs. Need to remove the
1577                  * P2P Device from the binding, allocate an new PHY context and
1578                  * create a new binding
1579                  */
1580                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1581                 if (!phy_ctxt) {
1582                         ret = -ENOSPC;
1583                         goto out_unlock;
1584                 }
1585
1586                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1587                                                1, 1);
1588                 if (ret) {
1589                         IWL_ERR(mvm, "Failed to change PHY context\n");
1590                         goto out_unlock;
1591                 }
1592
1593                 /* Unbind the P2P_DEVICE from the current PHY context */
1594                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1595                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1596                         goto out_unlock;
1597
1598                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1599
1600                 /* Bind the P2P_DEVICE to the new allocated PHY context */
1601                 mvmvif->phy_ctxt = phy_ctxt;
1602
1603                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1604                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1605                         goto out_unlock;
1606
1607                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1608         }
1609
1610 schedule_time_event:
1611         /* Schedule the time events */
1612         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1613
1614 out_unlock:
1615         mutex_unlock(&mvm->mutex);
1616         IWL_DEBUG_MAC80211(mvm, "leave\n");
1617         return ret;
1618 }
1619
1620 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1621 {
1622         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1623
1624         IWL_DEBUG_MAC80211(mvm, "enter\n");
1625
1626         mutex_lock(&mvm->mutex);
1627         iwl_mvm_stop_p2p_roc(mvm);
1628         mutex_unlock(&mvm->mutex);
1629
1630         IWL_DEBUG_MAC80211(mvm, "leave\n");
1631         return 0;
1632 }
1633
1634 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1635                                struct ieee80211_chanctx_conf *ctx)
1636 {
1637         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1638         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1639         struct iwl_mvm_phy_ctxt *phy_ctxt;
1640         int ret;
1641
1642         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1643
1644         mutex_lock(&mvm->mutex);
1645         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1646         if (!phy_ctxt) {
1647                 ret = -ENOSPC;
1648                 goto out;
1649         }
1650
1651         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1652                                        ctx->rx_chains_static,
1653                                        ctx->rx_chains_dynamic);
1654         if (ret) {
1655                 IWL_ERR(mvm, "Failed to add PHY context\n");
1656                 goto out;
1657         }
1658
1659         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1660         *phy_ctxt_id = phy_ctxt->id;
1661 out:
1662         mutex_unlock(&mvm->mutex);
1663         return ret;
1664 }
1665
1666 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1667                                    struct ieee80211_chanctx_conf *ctx)
1668 {
1669         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1670         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1671         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1672
1673         mutex_lock(&mvm->mutex);
1674         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1675         mutex_unlock(&mvm->mutex);
1676 }
1677
1678 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1679                                    struct ieee80211_chanctx_conf *ctx,
1680                                    u32 changed)
1681 {
1682         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1683         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1684         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1685
1686         if (WARN_ONCE((phy_ctxt->ref > 1) &&
1687                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1688                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1689                                    IEEE80211_CHANCTX_CHANGE_RADAR |
1690                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
1691                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
1692                       phy_ctxt->ref, changed))
1693                 return;
1694
1695         mutex_lock(&mvm->mutex);
1696         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1697                                  ctx->rx_chains_static,
1698                                  ctx->rx_chains_dynamic);
1699         iwl_mvm_bt_coex_vif_change(mvm);
1700         mutex_unlock(&mvm->mutex);
1701 }
1702
1703 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1704                                       struct ieee80211_vif *vif,
1705                                       struct ieee80211_chanctx_conf *ctx)
1706 {
1707         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1708         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1709         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1710         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1711         int ret;
1712
1713         mutex_lock(&mvm->mutex);
1714
1715         mvmvif->phy_ctxt = phy_ctxt;
1716
1717         switch (vif->type) {
1718         case NL80211_IFTYPE_AP:
1719         case NL80211_IFTYPE_ADHOC:
1720                 /*
1721                  * The AP binding flow is handled as part of the start_ap flow
1722                  * (in bss_info_changed), similarly for IBSS.
1723                  */
1724                 ret = 0;
1725                 goto out_unlock;
1726         case NL80211_IFTYPE_STATION:
1727         case NL80211_IFTYPE_MONITOR:
1728                 break;
1729         default:
1730                 ret = -EINVAL;
1731                 goto out_unlock;
1732         }
1733
1734         ret = iwl_mvm_binding_add_vif(mvm, vif);
1735         if (ret)
1736                 goto out_unlock;
1737
1738         /*
1739          * Power state must be updated before quotas,
1740          * otherwise fw will complain.
1741          */
1742         mvm->bound_vif_cnt++;
1743         iwl_mvm_power_update_binding(mvm, vif, true);
1744
1745         /* Setting the quota at this stage is only required for monitor
1746          * interfaces. For the other types, the bss_info changed flow
1747          * will handle quota settings.
1748          */
1749         if (vif->type == NL80211_IFTYPE_MONITOR) {
1750                 mvmvif->monitor_active = true;
1751                 ret = iwl_mvm_update_quotas(mvm, vif);
1752                 if (ret)
1753                         goto out_remove_binding;
1754         }
1755
1756         goto out_unlock;
1757
1758  out_remove_binding:
1759         iwl_mvm_binding_remove_vif(mvm, vif);
1760         mvm->bound_vif_cnt--;
1761         iwl_mvm_power_update_binding(mvm, vif, false);
1762  out_unlock:
1763         mutex_unlock(&mvm->mutex);
1764         if (ret)
1765                 mvmvif->phy_ctxt = NULL;
1766         return ret;
1767 }
1768
1769 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1770                                          struct ieee80211_vif *vif,
1771                                          struct ieee80211_chanctx_conf *ctx)
1772 {
1773         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1774         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1775
1776         mutex_lock(&mvm->mutex);
1777
1778         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1779
1780         switch (vif->type) {
1781         case NL80211_IFTYPE_AP:
1782         case NL80211_IFTYPE_ADHOC:
1783                 goto out_unlock;
1784         case NL80211_IFTYPE_MONITOR:
1785                 mvmvif->monitor_active = false;
1786                 iwl_mvm_update_quotas(mvm, NULL);
1787                 break;
1788         default:
1789                 break;
1790         }
1791
1792         iwl_mvm_binding_remove_vif(mvm, vif);
1793 out_unlock:
1794         mvmvif->phy_ctxt = NULL;
1795         mvm->bound_vif_cnt--;
1796         iwl_mvm_power_update_binding(mvm, vif, false);
1797
1798         mutex_unlock(&mvm->mutex);
1799 }
1800
1801 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1802                            struct ieee80211_sta *sta,
1803                            bool set)
1804 {
1805         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1806         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1807
1808         if (!mvm_sta || !mvm_sta->vif) {
1809                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1810                 return -EINVAL;
1811         }
1812
1813         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1814 }
1815
1816 #ifdef CONFIG_NL80211_TESTMODE
1817 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
1818         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
1819         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
1820         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
1821 };
1822
1823 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
1824                                       struct ieee80211_vif *vif,
1825                                       void *data, int len)
1826 {
1827         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
1828         int err;
1829         u32 noa_duration;
1830
1831         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
1832         if (err)
1833                 return err;
1834
1835         if (!tb[IWL_MVM_TM_ATTR_CMD])
1836                 return -EINVAL;
1837
1838         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
1839         case IWL_MVM_TM_CMD_SET_NOA:
1840                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
1841                     !vif->bss_conf.enable_beacon ||
1842                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
1843                         return -EINVAL;
1844
1845                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
1846                 if (noa_duration >= vif->bss_conf.beacon_int)
1847                         return -EINVAL;
1848
1849                 mvm->noa_duration = noa_duration;
1850                 mvm->noa_vif = vif;
1851
1852                 return iwl_mvm_update_quotas(mvm, NULL);
1853         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
1854                 /* must be associated client vif - ignore authorized */
1855                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
1856                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
1857                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
1858                         return -EINVAL;
1859
1860                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
1861                         return iwl_mvm_enable_beacon_filter(mvm, vif);
1862                 return iwl_mvm_disable_beacon_filter(mvm, vif);
1863         }
1864
1865         return -EOPNOTSUPP;
1866 }
1867
1868 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
1869                                     struct ieee80211_vif *vif,
1870                                     void *data, int len)
1871 {
1872         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1873         int err;
1874
1875         mutex_lock(&mvm->mutex);
1876         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
1877         mutex_unlock(&mvm->mutex);
1878
1879         return err;
1880 }
1881 #endif
1882
1883 struct ieee80211_ops iwl_mvm_hw_ops = {
1884         .tx = iwl_mvm_mac_tx,
1885         .ampdu_action = iwl_mvm_mac_ampdu_action,
1886         .start = iwl_mvm_mac_start,
1887         .restart_complete = iwl_mvm_mac_restart_complete,
1888         .stop = iwl_mvm_mac_stop,
1889         .add_interface = iwl_mvm_mac_add_interface,
1890         .remove_interface = iwl_mvm_mac_remove_interface,
1891         .config = iwl_mvm_mac_config,
1892         .prepare_multicast = iwl_mvm_prepare_multicast,
1893         .configure_filter = iwl_mvm_configure_filter,
1894         .bss_info_changed = iwl_mvm_bss_info_changed,
1895         .hw_scan = iwl_mvm_mac_hw_scan,
1896         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1897         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
1898         .sta_state = iwl_mvm_mac_sta_state,
1899         .sta_notify = iwl_mvm_mac_sta_notify,
1900         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1901         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1902         .sta_rc_update = iwl_mvm_sta_rc_update,
1903         .conf_tx = iwl_mvm_mac_conf_tx,
1904         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1905         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
1906         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
1907         .set_key = iwl_mvm_mac_set_key,
1908         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1909         .remain_on_channel = iwl_mvm_roc,
1910         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1911         .add_chanctx = iwl_mvm_add_chanctx,
1912         .remove_chanctx = iwl_mvm_remove_chanctx,
1913         .change_chanctx = iwl_mvm_change_chanctx,
1914         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1915         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1916
1917         .start_ap = iwl_mvm_start_ap_ibss,
1918         .stop_ap = iwl_mvm_stop_ap_ibss,
1919         .join_ibss = iwl_mvm_start_ap_ibss,
1920         .leave_ibss = iwl_mvm_stop_ap_ibss,
1921
1922         .set_tim = iwl_mvm_set_tim,
1923
1924         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
1925
1926 #ifdef CONFIG_PM_SLEEP
1927         /* look at d3.c */
1928         .suspend = iwl_mvm_suspend,
1929         .resume = iwl_mvm_resume,
1930         .set_wakeup = iwl_mvm_set_wakeup,
1931         .set_rekey_data = iwl_mvm_set_rekey_data,
1932 #if IS_ENABLED(CONFIG_IPV6)
1933         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1934 #endif
1935         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1936 #endif
1937 };