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
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  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
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  20  * along with this program; if not, write to the Free Software
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  22  * USA
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  25  * in the file called COPYING.
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  28  *  Intel Linux Wireless <ilw@linux.intel.com>
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  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
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  41  *    notice, this list of conditions and the following disclaimer.
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  43  *    notice, this list of conditions and the following disclaimer in
  44  *    the documentation and/or other materials provided with the
  45  *    distribution.
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  47  *    contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  51  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  52  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  53  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  54  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  56  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  60  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  *****************************************************************************/
  63 #include <linux/kernel.h>
  64 #include <linux/slab.h>
  65 #include <linux/skbuff.h>
  66 #include <linux/netdevice.h>
  67 #include <linux/etherdevice.h>
  68 #include <linux/ip.h>
  69 #include <net/mac80211.h>
  70 #include <net/tcp.h>
  71
  72 #include "iwl-op-mode.h"
  73 #include "iwl-io.h"
  74 #include "mvm.h"
  75 #include "sta.h"
  76 #include "time-event.h"
  77 #include "iwl-eeprom-parse.h"
  78 #include "fw-api-scan.h"
  79 #include "iwl-phy-db.h"
  80 #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[0].cipher) {
 266                 mvm->hw->n_cipher_schemes = 1;
 267                 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
 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                 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
 948                                     IEEE80211_SMPS_AUTOMATIC);
 949         } else if (changes & BSS_CHANGED_BEACON_INFO) {
 950                 /*
 951                  * We received a beacon _after_ association so
 952                  * remove the session protection.
 953                  */
 954                 iwl_mvm_remove_time_event(mvm, mvmvif,
 955                                           &mvmvif->time_event_data);
 956         } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
 957                               BSS_CHANGED_QOS)) {
 958                 ret = iwl_mvm_power_update_mode(mvm, vif);
 959                 if (ret)
 960                         IWL_ERR(mvm, "failed to update power mode\n");
 961         }
 962         if (changes & BSS_CHANGED_TXPOWER) {
 963                 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
 964                                 bss_conf->txpower);
 965                 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
 966         }
 967
 968         if (changes & BSS_CHANGED_CQM) {
 969                 IWL_DEBUG_MAC80211(mvm, "cqm info_changed");
 970                 /* reset cqm events tracking */
 971                 mvmvif->bf_data.last_cqm_event = 0;
 972                 ret = iwl_mvm_update_beacon_filter(mvm, vif);
 973                 if (ret)
 974                         IWL_ERR(mvm, "failed to update CQM thresholds\n");
 975         }
 976 }
 977
 978 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 979                                  struct ieee80211_vif *vif)
 980 {
 981         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 982         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 983         int ret;
 984
 985         mutex_lock(&mvm->mutex);
 986
 987         /* Send the beacon template */
 988         ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
 989         if (ret)
 990                 goto out_unlock;
 991
 992         /*
 993          * Re-calculate the tsf id, as the master-slave relations depend on the
 994          * beacon interval, which was not known when the AP interface was added.
 995          */
 996         if (vif->type == NL80211_IFTYPE_AP)
 997                 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
 998
 999         /* Add the mac context */
1000         ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1001         if (ret)
1002                 goto out_unlock;
1003
1004         /* Perform the binding */
1005         ret = iwl_mvm_binding_add_vif(mvm, vif);
1006         if (ret)
1007                 goto out_remove;
1008
1009         mvmvif->ap_ibss_active = true;
1010
1011         /* Send the bcast station. At this stage the TBTT and DTIM time events
1012          * are added and applied to the scheduler */
1013         ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1014         if (ret)
1015                 goto out_unbind;
1016
1017         /* must be set before quota calculations */
1018         mvmvif->ap_ibss_active = true;
1019
1020         /* power updated needs to be done before quotas */
1021         mvm->bound_vif_cnt++;
1022         iwl_mvm_power_update_binding(mvm, vif, true);
1023
1024         ret = iwl_mvm_update_quotas(mvm, vif);
1025         if (ret)
1026                 goto out_quota_failed;
1027
1028         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1029         if (vif->p2p && mvm->p2p_device_vif)
1030                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1031
1032         iwl_mvm_bt_coex_vif_change(mvm);
1033
1034         mutex_unlock(&mvm->mutex);
1035         return 0;
1036
1037 out_quota_failed:
1038         mvm->bound_vif_cnt--;
1039         iwl_mvm_power_update_binding(mvm, vif, false);
1040         mvmvif->ap_ibss_active = false;
1041         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1042 out_unbind:
1043         iwl_mvm_binding_remove_vif(mvm, vif);
1044 out_remove:
1045         iwl_mvm_mac_ctxt_remove(mvm, vif);
1046 out_unlock:
1047         mutex_unlock(&mvm->mutex);
1048         return ret;
1049 }
1050
1051 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1052                                  struct ieee80211_vif *vif)
1053 {
1054         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1055         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1056
1057         iwl_mvm_prepare_mac_removal(mvm, vif);
1058
1059         mutex_lock(&mvm->mutex);
1060
1061         mvmvif->ap_ibss_active = false;
1062
1063         iwl_mvm_bt_coex_vif_change(mvm);
1064
1065         /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
1066         if (vif->p2p && mvm->p2p_device_vif)
1067                 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif);
1068
1069         iwl_mvm_update_quotas(mvm, NULL);
1070         iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1071         iwl_mvm_binding_remove_vif(mvm, vif);
1072
1073         mvm->bound_vif_cnt--;
1074         iwl_mvm_power_update_binding(mvm, vif, false);
1075
1076         iwl_mvm_mac_ctxt_remove(mvm, vif);
1077
1078         mutex_unlock(&mvm->mutex);
1079 }
1080
1081 static void
1082 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1083                                  struct ieee80211_vif *vif,
1084                                  struct ieee80211_bss_conf *bss_conf,
1085                                  u32 changes)
1086 {
1087         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1088         enum ieee80211_bss_change ht_change = BSS_CHANGED_ERP_CTS_PROT |
1089                                               BSS_CHANGED_HT |
1090                                               BSS_CHANGED_BANDWIDTH;
1091         int ret;
1092
1093         /* Changes will be applied when the AP/IBSS is started */
1094         if (!mvmvif->ap_ibss_active)
1095                 return;
1096
1097         if (changes & ht_change) {
1098                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1099                 if (ret)
1100                         IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1101         }
1102
1103         /* Need to send a new beacon template to the FW */
1104         if (changes & BSS_CHANGED_BEACON) {
1105                 if (iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1106                         IWL_WARN(mvm, "Failed updating beacon data\n");
1107         }
1108 }
1109
1110 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1111                                      struct ieee80211_vif *vif,
1112                                      struct ieee80211_bss_conf *bss_conf,
1113                                      u32 changes)
1114 {
1115         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1116
1117         mutex_lock(&mvm->mutex);
1118
1119         switch (vif->type) {
1120         case NL80211_IFTYPE_STATION:
1121                 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1122                 break;
1123         case NL80211_IFTYPE_AP:
1124         case NL80211_IFTYPE_ADHOC:
1125                 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
1126                 break;
1127         default:
1128                 /* shouldn't happen */
1129                 WARN_ON_ONCE(1);
1130         }
1131
1132         mutex_unlock(&mvm->mutex);
1133 }
1134
1135 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1136                                struct ieee80211_vif *vif,
1137                                struct cfg80211_scan_request *req)
1138 {
1139         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1140         int ret;
1141
1142         if (req->n_channels == 0 || req->n_channels > MAX_NUM_SCAN_CHANNELS)
1143                 return -EINVAL;
1144
1145         mutex_lock(&mvm->mutex);
1146
1147         if (mvm->scan_status == IWL_MVM_SCAN_NONE)
1148                 ret = iwl_mvm_scan_request(mvm, vif, req);
1149         else
1150                 ret = -EBUSY;
1151
1152         mutex_unlock(&mvm->mutex);
1153
1154         return ret;
1155 }
1156
1157 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1158                                        struct ieee80211_vif *vif)
1159 {
1160         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1161
1162         mutex_lock(&mvm->mutex);
1163
1164         iwl_mvm_cancel_scan(mvm);
1165
1166         mutex_unlock(&mvm->mutex);
1167 }
1168
1169 static void
1170 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
1171                                   struct ieee80211_sta *sta, u16 tid,
1172                                   int num_frames,
1173                                   enum ieee80211_frame_release_type reason,
1174                                   bool more_data)
1175 {
1176         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1177
1178         /* TODO: how do we tell the fw to send frames for a specific TID */
1179
1180         /*
1181          * The fw will send EOSP notification when the last frame will be
1182          * transmitted.
1183          */
1184         iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames);
1185 }
1186
1187 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1188                                    struct ieee80211_vif *vif,
1189                                    enum sta_notify_cmd cmd,
1190                                    struct ieee80211_sta *sta)
1191 {
1192         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193         struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1194
1195         switch (cmd) {
1196         case STA_NOTIFY_SLEEP:
1197                 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
1198                         ieee80211_sta_block_awake(hw, sta, true);
1199                 /*
1200                  * The fw updates the STA to be asleep. Tx packets on the Tx
1201                  * queues to this station will not be transmitted. The fw will
1202                  * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1203                  */
1204                 break;
1205         case STA_NOTIFY_AWAKE:
1206                 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
1207                         break;
1208                 iwl_mvm_sta_modify_ps_wake(mvm, sta);
1209                 break;
1210         default:
1211                 break;
1212         }
1213 }
1214
1215 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1216                                        struct ieee80211_vif *vif,
1217                                        struct ieee80211_sta *sta)
1218 {
1219         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1220         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1221
1222         /*
1223          * This is called before mac80211 does RCU synchronisation,
1224          * so here we already invalidate our internal RCU-protected
1225          * station pointer. The rest of the code will thus no longer
1226          * be able to find the station this way, and we don't rely
1227          * on further RCU synchronisation after the sta_state()
1228          * callback deleted the station.
1229          */
1230         mutex_lock(&mvm->mutex);
1231         if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1232                 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1233                                    ERR_PTR(-ENOENT));
1234         mutex_unlock(&mvm->mutex);
1235 }
1236
1237 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1238                                  struct ieee80211_vif *vif,
1239                                  struct ieee80211_sta *sta,
1240                                  enum ieee80211_sta_state old_state,
1241                                  enum ieee80211_sta_state new_state)
1242 {
1243         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1244         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1245         int ret;
1246
1247         IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1248                            sta->addr, old_state, new_state);
1249
1250         /* this would be a mac80211 bug ... but don't crash */
1251         if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1252                 return -EINVAL;
1253
1254         /* if a STA is being removed, reuse its ID */
1255         flush_work(&mvm->sta_drained_wk);
1256
1257         mutex_lock(&mvm->mutex);
1258         if (old_state == IEEE80211_STA_NOTEXIST &&
1259             new_state == IEEE80211_STA_NONE) {
1260                 /*
1261                  * Firmware bug - it'll crash if the beacon interval is less
1262                  * than 16. We can't avoid connecting at all, so refuse the
1263                  * station state change, this will cause mac80211 to abandon
1264                  * attempts to connect to this AP, and eventually wpa_s will
1265                  * blacklist the AP...
1266                  */
1267                 if (vif->type == NL80211_IFTYPE_STATION &&
1268                     vif->bss_conf.beacon_int < 16) {
1269                         IWL_ERR(mvm,
1270                                 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1271                                 sta->addr, vif->bss_conf.beacon_int);
1272                         ret = -EINVAL;
1273                         goto out_unlock;
1274                 }
1275                 ret = iwl_mvm_add_sta(mvm, vif, sta);
1276         } else if (old_state == IEEE80211_STA_NONE &&
1277                    new_state == IEEE80211_STA_AUTH) {
1278                 ret = 0;
1279         } else if (old_state == IEEE80211_STA_AUTH &&
1280                    new_state == IEEE80211_STA_ASSOC) {
1281                 ret = iwl_mvm_update_sta(mvm, vif, sta);
1282                 if (ret == 0)
1283                         iwl_mvm_rs_rate_init(mvm, sta,
1284                                              mvmvif->phy_ctxt->channel->band,
1285                                              true);
1286         } else if (old_state == IEEE80211_STA_ASSOC &&
1287                    new_state == IEEE80211_STA_AUTHORIZED) {
1288                 /* enable beacon filtering */
1289                 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif));
1290                 ret = 0;
1291         } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1292                    new_state == IEEE80211_STA_ASSOC) {
1293                 /* disable beacon filtering */
1294                 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif));
1295                 ret = 0;
1296         } else if (old_state == IEEE80211_STA_ASSOC &&
1297                    new_state == IEEE80211_STA_AUTH) {
1298                 ret = 0;
1299         } else if (old_state == IEEE80211_STA_AUTH &&
1300                    new_state == IEEE80211_STA_NONE) {
1301                 ret = 0;
1302         } else if (old_state == IEEE80211_STA_NONE &&
1303                    new_state == IEEE80211_STA_NOTEXIST) {
1304                 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1305         } else {
1306                 ret = -EIO;
1307         }
1308  out_unlock:
1309         mutex_unlock(&mvm->mutex);
1310
1311         return ret;
1312 }
1313
1314 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1315 {
1316         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1317
1318         mvm->rts_threshold = value;
1319
1320         return 0;
1321 }
1322
1323 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1324                                   struct ieee80211_vif *vif,
1325                                   struct ieee80211_sta *sta, u32 changed)
1326 {
1327         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1328
1329         if (vif->type == NL80211_IFTYPE_STATION &&
1330             changed & IEEE80211_RC_NSS_CHANGED)
1331                 iwl_mvm_sf_update(mvm, vif, false);
1332 }
1333
1334 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1335                                struct ieee80211_vif *vif, u16 ac,
1336                                const struct ieee80211_tx_queue_params *params)
1337 {
1338         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1339         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1340
1341         mvmvif->queue_params[ac] = *params;
1342
1343         /*
1344          * No need to update right away, we'll get BSS_CHANGED_QOS
1345          * The exception is P2P_DEVICE interface which needs immediate update.
1346          */
1347         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1348                 int ret;
1349
1350                 mutex_lock(&mvm->mutex);
1351                 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
1352                 mutex_unlock(&mvm->mutex);
1353                 return ret;
1354         }
1355         return 0;
1356 }
1357
1358 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
1359                                       struct ieee80211_vif *vif)
1360 {
1361         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1362         u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
1363                            200 + vif->bss_conf.beacon_int);
1364         u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
1365                                100 + vif->bss_conf.beacon_int);
1366
1367         if (WARN_ON_ONCE(vif->bss_conf.assoc))
1368                 return;
1369
1370         mutex_lock(&mvm->mutex);
1371         /* Try really hard to protect the session and hear a beacon */
1372         iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
1373         mutex_unlock(&mvm->mutex);
1374 }
1375
1376 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
1377                                         struct ieee80211_vif *vif,
1378                                         struct cfg80211_sched_scan_request *req,
1379                                         struct ieee80211_sched_scan_ies *ies)
1380 {
1381         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1382         int ret;
1383
1384         mutex_lock(&mvm->mutex);
1385
1386         if (mvm->scan_status != IWL_MVM_SCAN_NONE) {
1387                 IWL_DEBUG_SCAN(mvm,
1388                                "SCHED SCAN request during internal scan - abort\n");
1389                 ret = -EBUSY;
1390                 goto out;
1391         }
1392
1393         mvm->scan_status = IWL_MVM_SCAN_SCHED;
1394
1395         ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1396         if (ret)
1397                 goto err;
1398
1399         ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1400         if (ret)
1401                 goto err;
1402
1403         ret = iwl_mvm_sched_scan_start(mvm, req);
1404         if (!ret)
1405                 goto out;
1406 err:
1407         mvm->scan_status = IWL_MVM_SCAN_NONE;
1408 out:
1409         mutex_unlock(&mvm->mutex);
1410         return ret;
1411 }
1412
1413 static void iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
1414                                         struct ieee80211_vif *vif)
1415 {
1416         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1417
1418         mutex_lock(&mvm->mutex);
1419         iwl_mvm_sched_scan_stop(mvm);
1420         mutex_unlock(&mvm->mutex);
1421 }
1422
1423 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
1424                                enum set_key_cmd cmd,
1425                                struct ieee80211_vif *vif,
1426                                struct ieee80211_sta *sta,
1427                                struct ieee80211_key_conf *key)
1428 {
1429         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1430         int ret;
1431
1432         if (iwlwifi_mod_params.sw_crypto) {
1433                 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
1434                 return -EOPNOTSUPP;
1435         }
1436
1437         switch (key->cipher) {
1438         case WLAN_CIPHER_SUITE_TKIP:
1439                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1440                 /* fall-through */
1441         case WLAN_CIPHER_SUITE_CCMP:
1442                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1443                 break;
1444         case WLAN_CIPHER_SUITE_AES_CMAC:
1445                 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
1446                 break;
1447         case WLAN_CIPHER_SUITE_WEP40:
1448         case WLAN_CIPHER_SUITE_WEP104:
1449                 /*
1450                  * Support for TX only, at least for now, so accept
1451                  * the key and do nothing else. Then mac80211 will
1452                  * pass it for TX but we don't have to use it for RX.
1453                  */
1454                 return 0;
1455         default:
1456                 /* currently FW supports only one optional cipher scheme */
1457                 if (hw->n_cipher_schemes &&
1458                     hw->cipher_schemes->cipher == key->cipher)
1459                         key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
1460                 else
1461                         return -EOPNOTSUPP;
1462         }
1463
1464         mutex_lock(&mvm->mutex);
1465
1466         switch (cmd) {
1467         case SET_KEY:
1468                 if ((vif->type == NL80211_IFTYPE_ADHOC ||
1469                      vif->type == NL80211_IFTYPE_AP) && !sta) {
1470                         /*
1471                          * GTK on AP interface is a TX-only key, return 0;
1472                          * on IBSS they're per-station and because we're lazy
1473                          * we don't support them for RX, so do the same.
1474                          */
1475                         ret = 0;
1476                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1477                         break;
1478                 }
1479
1480                 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
1481                 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
1482                 if (ret) {
1483                         IWL_WARN(mvm, "set key failed\n");
1484                         /*
1485                          * can't add key for RX, but we don't need it
1486                          * in the device for TX so still return 0
1487                          */
1488                         key->hw_key_idx = STA_KEY_IDX_INVALID;
1489                         ret = 0;
1490                 }
1491
1492                 break;
1493         case DISABLE_KEY:
1494                 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
1495                         ret = 0;
1496                         break;
1497                 }
1498
1499                 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
1500                 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
1501                 break;
1502         default:
1503                 ret = -EINVAL;
1504         }
1505
1506         mutex_unlock(&mvm->mutex);
1507         return ret;
1508 }
1509
1510 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
1511                                         struct ieee80211_vif *vif,
1512                                         struct ieee80211_key_conf *keyconf,
1513                                         struct ieee80211_sta *sta,
1514                                         u32 iv32, u16 *phase1key)
1515 {
1516         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1517
1518         if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
1519                 return;
1520
1521         iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
1522 }
1523
1524
1525 static int iwl_mvm_roc(struct ieee80211_hw *hw,
1526                        struct ieee80211_vif *vif,
1527                        struct ieee80211_channel *channel,
1528                        int duration,
1529                        enum ieee80211_roc_type type)
1530 {
1531         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1532         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1533         struct cfg80211_chan_def chandef;
1534         struct iwl_mvm_phy_ctxt *phy_ctxt;
1535         int ret, i;
1536
1537         IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
1538                            duration, type);
1539
1540         if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
1541                 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
1542                 return -EINVAL;
1543         }
1544
1545         mutex_lock(&mvm->mutex);
1546
1547         for (i = 0; i < NUM_PHY_CTX; i++) {
1548                 phy_ctxt = &mvm->phy_ctxts[i];
1549                 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
1550                         continue;
1551
1552                 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
1553                         /*
1554                          * Unbind the P2P_DEVICE from the current PHY context,
1555                          * and if the PHY context is not used remove it.
1556                          */
1557                         ret = iwl_mvm_binding_remove_vif(mvm, vif);
1558                         if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1559                                 goto out_unlock;
1560
1561                         iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1562
1563                         /* Bind the P2P_DEVICE to the current PHY Context */
1564                         mvmvif->phy_ctxt = phy_ctxt;
1565
1566                         ret = iwl_mvm_binding_add_vif(mvm, vif);
1567                         if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1568                                 goto out_unlock;
1569
1570                         iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1571                         goto schedule_time_event;
1572                 }
1573         }
1574
1575         /* Need to update the PHY context only if the ROC channel changed */
1576         if (channel == mvmvif->phy_ctxt->channel)
1577                 goto schedule_time_event;
1578
1579         cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
1580
1581         /*
1582          * Change the PHY context configuration as it is currently referenced
1583          * only by the P2P Device MAC
1584          */
1585         if (mvmvif->phy_ctxt->ref == 1) {
1586                 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
1587                                                &chandef, 1, 1);
1588                 if (ret)
1589                         goto out_unlock;
1590         } else {
1591                 /*
1592                  * The PHY context is shared with other MACs. Need to remove the
1593                  * P2P Device from the binding, allocate an new PHY context and
1594                  * create a new binding
1595                  */
1596                 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1597                 if (!phy_ctxt) {
1598                         ret = -ENOSPC;
1599                         goto out_unlock;
1600                 }
1601
1602                 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
1603                                                1, 1);
1604                 if (ret) {
1605                         IWL_ERR(mvm, "Failed to change PHY context\n");
1606                         goto out_unlock;
1607                 }
1608
1609                 /* Unbind the P2P_DEVICE from the current PHY context */
1610                 ret = iwl_mvm_binding_remove_vif(mvm, vif);
1611                 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
1612                         goto out_unlock;
1613
1614                 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1615
1616                 /* Bind the P2P_DEVICE to the new allocated PHY context */
1617                 mvmvif->phy_ctxt = phy_ctxt;
1618
1619                 ret = iwl_mvm_binding_add_vif(mvm, vif);
1620                 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
1621                         goto out_unlock;
1622
1623                 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1624         }
1625
1626 schedule_time_event:
1627         /* Schedule the time events */
1628         ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
1629
1630 out_unlock:
1631         mutex_unlock(&mvm->mutex);
1632         IWL_DEBUG_MAC80211(mvm, "leave\n");
1633         return ret;
1634 }
1635
1636 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
1637 {
1638         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1639
1640         IWL_DEBUG_MAC80211(mvm, "enter\n");
1641
1642         mutex_lock(&mvm->mutex);
1643         iwl_mvm_stop_p2p_roc(mvm);
1644         mutex_unlock(&mvm->mutex);
1645
1646         IWL_DEBUG_MAC80211(mvm, "leave\n");
1647         return 0;
1648 }
1649
1650 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
1651                                struct ieee80211_chanctx_conf *ctx)
1652 {
1653         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1654         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1655         struct iwl_mvm_phy_ctxt *phy_ctxt;
1656         int ret;
1657
1658         IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
1659
1660         mutex_lock(&mvm->mutex);
1661         phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1662         if (!phy_ctxt) {
1663                 ret = -ENOSPC;
1664                 goto out;
1665         }
1666
1667         ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1668                                        ctx->rx_chains_static,
1669                                        ctx->rx_chains_dynamic);
1670         if (ret) {
1671                 IWL_ERR(mvm, "Failed to add PHY context\n");
1672                 goto out;
1673         }
1674
1675         iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
1676         *phy_ctxt_id = phy_ctxt->id;
1677 out:
1678         mutex_unlock(&mvm->mutex);
1679         return ret;
1680 }
1681
1682 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
1683                                    struct ieee80211_chanctx_conf *ctx)
1684 {
1685         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1686         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1687         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1688
1689         mutex_lock(&mvm->mutex);
1690         iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
1691         mutex_unlock(&mvm->mutex);
1692 }
1693
1694 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
1695                                    struct ieee80211_chanctx_conf *ctx,
1696                                    u32 changed)
1697 {
1698         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1699         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1700         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1701
1702         if (WARN_ONCE((phy_ctxt->ref > 1) &&
1703                       (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
1704                                    IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
1705                                    IEEE80211_CHANCTX_CHANGE_RADAR |
1706                                    IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
1707                       "Cannot change PHY. Ref=%d, changed=0x%X\n",
1708                       phy_ctxt->ref, changed))
1709                 return;
1710
1711         mutex_lock(&mvm->mutex);
1712         iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
1713                                  ctx->rx_chains_static,
1714                                  ctx->rx_chains_dynamic);
1715         iwl_mvm_bt_coex_vif_change(mvm);
1716         mutex_unlock(&mvm->mutex);
1717 }
1718
1719 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
1720                                       struct ieee80211_vif *vif,
1721                                       struct ieee80211_chanctx_conf *ctx)
1722 {
1723         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1724         u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
1725         struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
1726         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1727         int ret;
1728
1729         mutex_lock(&mvm->mutex);
1730
1731         mvmvif->phy_ctxt = phy_ctxt;
1732
1733         switch (vif->type) {
1734         case NL80211_IFTYPE_AP:
1735         case NL80211_IFTYPE_ADHOC:
1736                 /*
1737                  * The AP binding flow is handled as part of the start_ap flow
1738                  * (in bss_info_changed), similarly for IBSS.
1739                  */
1740                 ret = 0;
1741                 goto out_unlock;
1742         case NL80211_IFTYPE_STATION:
1743         case NL80211_IFTYPE_MONITOR:
1744                 break;
1745         default:
1746                 ret = -EINVAL;
1747                 goto out_unlock;
1748         }
1749
1750         ret = iwl_mvm_binding_add_vif(mvm, vif);
1751         if (ret)
1752                 goto out_unlock;
1753
1754         /*
1755          * Power state must be updated before quotas,
1756          * otherwise fw will complain.
1757          */
1758         mvm->bound_vif_cnt++;
1759         iwl_mvm_power_update_binding(mvm, vif, true);
1760
1761         /* Setting the quota at this stage is only required for monitor
1762          * interfaces. For the other types, the bss_info changed flow
1763          * will handle quota settings.
1764          */
1765         if (vif->type == NL80211_IFTYPE_MONITOR) {
1766                 mvmvif->monitor_active = true;
1767                 ret = iwl_mvm_update_quotas(mvm, vif);
1768                 if (ret)
1769                         goto out_remove_binding;
1770         }
1771
1772         goto out_unlock;
1773
1774  out_remove_binding:
1775         iwl_mvm_binding_remove_vif(mvm, vif);
1776         mvm->bound_vif_cnt--;
1777         iwl_mvm_power_update_binding(mvm, vif, false);
1778  out_unlock:
1779         mutex_unlock(&mvm->mutex);
1780         if (ret)
1781                 mvmvif->phy_ctxt = NULL;
1782         return ret;
1783 }
1784
1785 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
1786                                          struct ieee80211_vif *vif,
1787                                          struct ieee80211_chanctx_conf *ctx)
1788 {
1789         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1790         struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1791
1792         mutex_lock(&mvm->mutex);
1793
1794         iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
1795
1796         switch (vif->type) {
1797         case NL80211_IFTYPE_AP:
1798         case NL80211_IFTYPE_ADHOC:
1799                 goto out_unlock;
1800         case NL80211_IFTYPE_MONITOR:
1801                 mvmvif->monitor_active = false;
1802                 iwl_mvm_update_quotas(mvm, NULL);
1803                 break;
1804         default:
1805                 break;
1806         }
1807
1808         iwl_mvm_binding_remove_vif(mvm, vif);
1809         mvm->bound_vif_cnt--;
1810         iwl_mvm_power_update_binding(mvm, vif, false);
1811
1812 out_unlock:
1813         mvmvif->phy_ctxt = NULL;
1814         mutex_unlock(&mvm->mutex);
1815 }
1816
1817 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
1818                            struct ieee80211_sta *sta,
1819                            bool set)
1820 {
1821         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1822         struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1823
1824         if (!mvm_sta || !mvm_sta->vif) {
1825                 IWL_ERR(mvm, "Station is not associated to a vif\n");
1826                 return -EINVAL;
1827         }
1828
1829         return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
1830 }
1831
1832 #ifdef CONFIG_NL80211_TESTMODE
1833 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
1834         [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
1835         [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
1836         [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
1837 };
1838
1839 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
1840                                       struct ieee80211_vif *vif,
1841                                       void *data, int len)
1842 {
1843         struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
1844         int err;
1845         u32 noa_duration;
1846
1847         err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
1848         if (err)
1849                 return err;
1850
1851         if (!tb[IWL_MVM_TM_ATTR_CMD])
1852                 return -EINVAL;
1853
1854         switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
1855         case IWL_MVM_TM_CMD_SET_NOA:
1856                 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
1857                     !vif->bss_conf.enable_beacon ||
1858                     !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
1859                         return -EINVAL;
1860
1861                 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
1862                 if (noa_duration >= vif->bss_conf.beacon_int)
1863                         return -EINVAL;
1864
1865                 mvm->noa_duration = noa_duration;
1866                 mvm->noa_vif = vif;
1867
1868                 return iwl_mvm_update_quotas(mvm, NULL);
1869         case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
1870                 /* must be associated client vif - ignore authorized */
1871                 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
1872                     !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
1873                     !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
1874                         return -EINVAL;
1875
1876                 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
1877                         return iwl_mvm_enable_beacon_filter(mvm, vif);
1878                 return iwl_mvm_disable_beacon_filter(mvm, vif);
1879         }
1880
1881         return -EOPNOTSUPP;
1882 }
1883
1884 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
1885                                     struct ieee80211_vif *vif,
1886                                     void *data, int len)
1887 {
1888         struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1889         int err;
1890
1891         mutex_lock(&mvm->mutex);
1892         err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
1893         mutex_unlock(&mvm->mutex);
1894
1895         return err;
1896 }
1897 #endif
1898
1899 struct ieee80211_ops iwl_mvm_hw_ops = {
1900         .tx = iwl_mvm_mac_tx,
1901         .ampdu_action = iwl_mvm_mac_ampdu_action,
1902         .start = iwl_mvm_mac_start,
1903         .restart_complete = iwl_mvm_mac_restart_complete,
1904         .stop = iwl_mvm_mac_stop,
1905         .add_interface = iwl_mvm_mac_add_interface,
1906         .remove_interface = iwl_mvm_mac_remove_interface,
1907         .config = iwl_mvm_mac_config,
1908         .prepare_multicast = iwl_mvm_prepare_multicast,
1909         .configure_filter = iwl_mvm_configure_filter,
1910         .bss_info_changed = iwl_mvm_bss_info_changed,
1911         .hw_scan = iwl_mvm_mac_hw_scan,
1912         .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1913         .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
1914         .sta_state = iwl_mvm_mac_sta_state,
1915         .sta_notify = iwl_mvm_mac_sta_notify,
1916         .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
1917         .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1918         .sta_rc_update = iwl_mvm_sta_rc_update,
1919         .conf_tx = iwl_mvm_mac_conf_tx,
1920         .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
1921         .sched_scan_start = iwl_mvm_mac_sched_scan_start,
1922         .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
1923         .set_key = iwl_mvm_mac_set_key,
1924         .update_tkip_key = iwl_mvm_mac_update_tkip_key,
1925         .remain_on_channel = iwl_mvm_roc,
1926         .cancel_remain_on_channel = iwl_mvm_cancel_roc,
1927         .add_chanctx = iwl_mvm_add_chanctx,
1928         .remove_chanctx = iwl_mvm_remove_chanctx,
1929         .change_chanctx = iwl_mvm_change_chanctx,
1930         .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
1931         .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
1932
1933         .start_ap = iwl_mvm_start_ap_ibss,
1934         .stop_ap = iwl_mvm_stop_ap_ibss,
1935         .join_ibss = iwl_mvm_start_ap_ibss,
1936         .leave_ibss = iwl_mvm_stop_ap_ibss,
1937
1938         .set_tim = iwl_mvm_set_tim,
1939
1940         CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
1941
1942 #ifdef CONFIG_PM_SLEEP
1943         /* look at d3.c */
1944         .suspend = iwl_mvm_suspend,
1945         .resume = iwl_mvm_resume,
1946         .set_wakeup = iwl_mvm_set_wakeup,
1947         .set_rekey_data = iwl_mvm_set_rekey_data,
1948 #if IS_ENABLED(CONFIG_IPV6)
1949         .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
1950 #endif
1951         .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
1952 #endif
1953 };